379 lines
21 KiB
JSON
379 lines
21 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-75758",
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"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"state": "PUBLISHED",
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"assignerShortName": "EEF",
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"dateReserved": "2026-08-19T09:00:01.955Z",
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"datePublished": "2026-08-28T11:28:53.505Z",
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"dateUpdated": "2026-08-28T18:29:23.745Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"cpes": [
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"cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Inspect.List'",
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"'Elixir.List'",
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"'Elixir.IO'"
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],
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"packageName": "elixir",
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"packageURL": "pkg:otp/elixir?repository_url=https:%2F%2Fgithub.com%2Felixir-lang%2Felixir&vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Felixir-lang%2Felixir.git",
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"product": "elixir",
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"programFiles": [
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"lib/inspect.ex",
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"lib/list.ex",
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"lib/io.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Inspect.List':inspect/2"
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},
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{
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"name": "'Elixir.List':to_string/1"
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},
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{
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"name": "'Elixir.List':to_charlist/1"
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},
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{
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"name": "'Elixir.List':ascii_printable?/2"
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},
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{
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"name": "'Elixir.IO':chardata_to_string/1"
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}
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],
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"repo": "https://github.com/elixir-lang/elixir",
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"vendor": "elixir-lang",
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"versions": [
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{
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"lessThan": "1.18.5",
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"status": "affected",
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"version": "1.15.0-rc.0",
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"versionType": "semver"
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},
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{
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"lessThan": "1.19.6",
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"status": "affected",
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"version": "1.19.0-rc.0",
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"versionType": "semver"
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},
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{
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"lessThan": "1.20.4",
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"status": "affected",
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"version": "1.20.0-rc.0",
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"versionType": "semver"
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}
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]
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},
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{
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"collectionURL": "https://github.com",
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"cpes": [
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"cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Inspect.List'",
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"'Elixir.List'",
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"'Elixir.IO'"
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],
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"packageName": "elixir-lang/elixir",
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"packageURL": "pkg:github/elixir-lang/elixir",
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"product": "elixir",
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"programFiles": [
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"lib/elixir/lib/inspect.ex",
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"lib/elixir/lib/list.ex",
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"lib/elixir/lib/io.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Inspect.List':inspect/2"
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},
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{
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"name": "'Elixir.List':to_string/1"
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},
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{
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"name": "'Elixir.List':to_charlist/1"
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},
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{
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"name": "'Elixir.List':ascii_printable?/2"
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},
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{
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"name": "'Elixir.IO':chardata_to_string/1"
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}
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],
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"repo": "https://github.com/elixir-lang/elixir",
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"vendor": "elixir-lang",
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"versions": [
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{
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"changes": [
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{
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"at": "1eff1acffd49bdcc0d7f57ca74c1603328eed68a",
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"status": "unaffected"
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},
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{
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"at": "5230d73968f1b4969d2a2646786fa6c71475f5cc",
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"status": "unaffected"
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},
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{
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"at": "a983c8c043b1fbf1d95df78a29149222dac2988c",
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"status": "unaffected"
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},
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{
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"at": "0bba5887577b1e328da825bd018815fdc519685a",
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"status": "unaffected"
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}
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],
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"lessThan": "*",
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"status": "affected",
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"version": "9718f2b90ce086ff8614d5782f4ec528495c98dd",
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"versionType": "git"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"cpeMatch": [
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{
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"criteria": "cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "1.18.5",
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"versionStartIncluding": "1.15.0-rc.0",
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"vulnerable": true
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},
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{
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"criteria": "cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "1.19.6",
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"versionStartIncluding": "1.19.0-rc.0",
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"vulnerable": true
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},
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{
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"criteria": "cpe:2.3:a:elixir-lang:elixir:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "1.20.4",
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"versionStartIncluding": "1.20.0-rc.0",
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"vulnerable": true
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}
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],
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"negate": false,
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"operator": "OR"
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}
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],
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"operator": "AND"
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "reporter",
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"value": "Thomas Cioppettini / Scalpel Software Inc"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "José Valim"
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},
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{
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"lang": "en",
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"type": "coordinator",
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"value": "Jonatan Männchen / EEF"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Uncontrolled Recursion vulnerability in the Elixir standard library allows an attacker who controls a list passed to <code>inspect/1</code>, <code>List.to_string/1</code>, or <code>List.to_charlist/1</code> to exhaust a BEAM node's memory.</p>\n<p><code>Inspect.List</code>'s charlist branch in <code>lib/elixir/lib/inspect.ex</code> classifies a list as a charlist using <code>List.ascii_printable?/2</code>, which examines only the first <code>:printable_limit</code> (4096 by default) elements, and then calls <code>IO.chardata_to_string/1</code> on the whole term. A list whose printable prefix exceeds that limit but which contains a later element that is not a code point (an atom, an out-of-range integer, or an improper tail) is therefore mis-classified, and the conversion raises <code>ArgumentError</code>. That conversion runs inside <code>List.to_string/1</code>, whose rescue clause builds its message by interpolating <code>inspect(list)</code>, which re-enters the same branch and raises again. The nested inspection is an argument to <code>raise</code>, so the recursion is not in tail position and every level is retained: the process stack grows monotonically while each cycle re-walks the list, until the process is killed by <code>max_heap_size</code> or, by default, the node runs out of memory. <code>List.to_charlist/1</code> has the same rescue shape.</p>\n<p>Below the printable limit the inner <code>inspect/1</code> sees the invalid element within its counter and renders the list in ordinary bracket form, so a single <code>ArgumentError</code> is raised and no recursion occurs.</p>\n<p>This issue affects elixir: from 1.15.0-rc.0 before 1.18.5, from 1.19.0-rc.0 before 1.19.6, and from 1.20.0-rc.0 before 1.20.4.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Uncontrolled Recursion vulnerability in the Elixir standard library allows an attacker who controls a list passed to `inspect/1`, `List.to_string/1`, or `List.to_charlist/1` to exhaust a BEAM node's memory.\n\n`Inspect.List`'s charlist branch in `lib/elixir/lib/inspect.ex` classifies a list as a charlist using `List.ascii_printable?/2`, which examines only the first `:printable_limit` (4096 by default) elements, and then calls `IO.chardata_to_string/1` on the whole term. A list whose printable prefix exceeds that limit but which contains a later element that is not a code point (an atom, an out-of-range integer, or an improper tail) is therefore mis-classified, and the conversion raises `ArgumentError`. That conversion runs inside `List.to_string/1`, whose rescue clause builds its message by interpolating `inspect(list)`, which re-enters the same branch and raises again. The nested inspection is an argument to `raise`, so the recursion is not in tail position and every level is retained: the process stack grows monotonically while each cycle re-walks the list, until the process is killed by `max_heap_size` or, by default, the node runs out of memory. `List.to_charlist/1` has the same rescue shape.\n\nBelow the printable limit the inner `inspect/1` sees the invalid element within its counter and renders the list in ordinary bracket form, so a single `ArgumentError` is raised and no recursion occurs.\n\nThis issue affects elixir: from 1.15.0-rc.0 before 1.18.5, from 1.19.0-rc.0 before 1.19.6, and from 1.20.0-rc.0 before 1.20.4."
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}
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],
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"value": "Uncontrolled Recursion vulnerability in the Elixir standard library allows an attacker who controls a list passed to inspect/1, List.to_string/1, or List.to_charlist/1 to exhaust a BEAM node's memory.\n\nInspect.List's charlist branch in lib/elixir/lib/inspect.ex classifies a list as a charlist using List.ascii_printable?/2, which examines only the first :printable_limit (4096 by default) elements, and then calls IO.chardata_to_string/1 on the whole term. A list whose printable prefix exceeds that limit but which contains a later element that is not a code point (an atom, an out-of-range integer, or an improper tail) is therefore mis-classified, and the conversion raises ArgumentError. That conversion runs inside List.to_string/1, whose rescue clause builds its message by interpolating inspect(list), which re-enters the same branch and raises again. The nested inspection is an argument to raise, so the recursion is not in tail position and every level is retained: the process stack grows monotonically while each cycle re-walks the list, until the process is killed by max_heap_size or, by default, the node runs out of memory. List.to_charlist/1 has the same rescue shape.\n\nBelow the printable limit the inner inspect/1 sees the invalid element within its counter and renders the list in ordinary bracket form, so a single ArgumentError is raised and no recursion occurs.\n\nThis issue affects elixir: from 1.15.0-rc.0 before 1.18.5, from 1.19.0-rc.0 before 1.19.6, and from 1.20.0-rc.0 before 1.20.4."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-130",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-130 Excessive Allocation"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"attackVector": "LOCAL",
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"baseScore": 5.9,
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"baseSeverity": "MEDIUM",
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"privilegesRequired": "NONE",
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"providerUrgency": "NOT_DEFINED",
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"subAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"userInteraction": "NONE",
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"valueDensity": "NOT_DEFINED",
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"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "HIGH",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-674",
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"description": "CWE-674 Uncontrolled Recursion",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"shortName": "EEF",
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"dateUpdated": "2026-08-28T11:28:53.505Z"
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},
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"references": [
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{
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"tags": [
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"vendor-advisory",
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"related"
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],
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"url": "https://github.com/elixir-lang/elixir/security/advisories/GHSA-jf5q-v438-665c"
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},
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{
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"tags": [
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"related"
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],
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"url": "https://cna.erlef.org/cves/CVE-2026-75758.html"
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},
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{
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"tags": [
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"related"
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],
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"url": "https://osv.dev/vulnerability/EEF-CVE-2026-75758"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/elixir-lang/elixir/commit/1eff1acffd49bdcc0d7f57ca74c1603328eed68a"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/elixir-lang/elixir/commit/5230d73968f1b4969d2a2646786fa6c71475f5cc"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/elixir-lang/elixir/commit/a983c8c043b1fbf1d95df78a29149222dac2988c"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/elixir-lang/elixir/commit/0bba5887577b1e328da825bd018815fdc519685a"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"title": "Unbounded recursion between Inspect.List charlist rendering and List.to_string/1 error path in Elixir",
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"workarounds": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Install a global inspect function that renders lists as lists rather than inferring charlists, by calling <code>Inspect.Opts.default_inspect_fun/1</code> with <code>fn term, opts -> Inspect.inspect(term, %{opts | charlists: :as_lists}) end</code> from the application's start callback. This keeps the charlist branch from being entered at all, so the mis-inferred conversion never raises and the error path cannot recurse.</p>\n<p>The trade-off is global: charlists then render in bracket form, so <code>~c\"abc\"</code> inspects as <code>[97, 98, 99]</code> everywhere in the application, including in logs and error reports.</p>"
|
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Install a global inspect function that renders lists as lists rather than inferring charlists, by calling `Inspect.Opts.default_inspect_fun/1` with `fn term, opts -> Inspect.inspect(term, %{opts | charlists: :as_lists}) end` from the application's start callback. This keeps the charlist branch from being entered at all, so the mis-inferred conversion never raises and the error path cannot recurse.\n\nThe trade-off is global: charlists then render in bracket form, so `~c\"abc\"` inspects as `[97, 98, 99]` everywhere in the application, including in logs and error reports."
|
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}
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],
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"value": "Install a global inspect function that renders lists as lists rather than inferring charlists, by calling Inspect.Opts.default_inspect_fun/1 with fn term, opts -> Inspect.inspect(term, %{opts | charlists: :as_lists}) end from the application's start callback. This keeps the charlist branch from being entered at all, so the mis-inferred conversion never raises and the error path cannot recurse.\n\nThe trade-off is global: charlists then render in bracket form, so ~c\"abc\" inspects as [97, 98, 99] everywhere in the application, including in logs and error reports."
|
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}
|
|
]
|
|
},
|
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"adp": [
|
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{
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"references": [
|
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{
|
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"url": "https://github.com/elixir-lang/elixir/security/advisories/GHSA-jf5q-v438-665c",
|
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"tags": [
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"exploit"
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]
|
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}
|
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],
|
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"metrics": [
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{
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|
"other": {
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"type": "ssvc",
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"content": {
|
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"timestamp": "2026-08-28T18:28:19.564474Z",
|
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"id": "CVE-2026-75758",
|
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"options": [
|
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
|
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}
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],
|
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
|
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-28T18:29:23.745Z"
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}
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}
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]
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}
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} |