275 lines
13 KiB
JSON
275 lines
13 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-2026-82743",
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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": "2026-08-31T01:00:09.774Z",
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"datePublished": "2026-09-01T03:37:24.292Z",
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"dateUpdated": "2026-09-01T12:40:17.592Z"
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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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"collectionURL": "https://repo.hex.pm",
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"cpes": [
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"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Ash.Actions.Read.AsyncLimiter'"
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],
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"packageName": "ash",
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"packageURL": "pkg:hex/ash",
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"product": "ash",
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"programFiles": [
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"lib/ash/actions/read/async_limiter.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Ash.Actions.Read.AsyncLimiter':await_at_least_one/1"
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}
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],
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"repo": "https://github.com/ash-project/ash",
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"vendor": "ash-project",
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"versions": [
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{
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"lessThan": "3.32.2",
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"status": "affected",
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"version": "2.19.0",
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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:ash-project:ash:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Ash.Actions.Read.AsyncLimiter'"
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],
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"packageName": "ash-project/ash",
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"packageURL": "pkg:github/ash-project/ash",
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"product": "ash",
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"programFiles": [
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"lib/ash/actions/read/async_limiter.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Ash.Actions.Read.AsyncLimiter':await_at_least_one/1"
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}
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],
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"repo": "https://github.com/ash-project/ash",
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"vendor": "ash-project",
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"versions": [
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{
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"lessThan": "0a5ecd2ffdfa848afdeb8827f02982ef2a63a1cd",
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"status": "affected",
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"version": "c48cb08026cf56b1ac33209203bc9c00061b40b8",
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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:ash-project:ash:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "3.32.2",
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"versionStartIncluding": "2.19.0",
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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": "remediation developer",
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"value": "Zach Daniel / Ash Project"
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},
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{
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"lang": "en",
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"type": "reporter",
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"value": "Peter Ullrich"
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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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"lang": "en",
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"type": "finder",
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"value": "Peter Ullrich"
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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 Resource Consumption vulnerability in ash-project ash lets a slow asynchronous read spin a scheduler thread at full CPU while the framework waits for it.</p>\n<p><code>Ash.Actions.Read.AsyncLimiter.await_at_least_one/1</code> (<code>lib/ash/actions/read/async_limiter.ex</code>) waited for concurrent async read tasks by polling each with <code>Task.yield(task, 0)</code> in a tight loop rather than blocking. While every outstanding task is still running (a slow related-data load or calculation), the loop returns immediately and repeats, busy-spinning and holding a BEAM scheduler at full CPU for the whole duration of the slow read; concurrent slow reads tie up further schedulers. The fix waits with <code>Task.yield_many</code> (a non-blocking sweep followed by a blocking wait with <code>timeout: :infinity</code>), so the process sleeps until a task completes instead of spinning.</p>\n<p>This issue affects ash: from 2.19.0 before 3.32.2.</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 Resource Consumption vulnerability in ash-project ash lets a slow asynchronous read spin a scheduler thread at full CPU while the framework waits for it.\n\n`Ash.Actions.Read.AsyncLimiter.await_at_least_one/1` (`lib/ash/actions/read/async_limiter.ex`) waited for concurrent async read tasks by polling each with `Task.yield(task, 0)` in a tight loop rather than blocking. While every outstanding task is still running (a slow related-data load or calculation), the loop returns immediately and repeats, busy-spinning and holding a BEAM scheduler at full CPU for the whole duration of the slow read; concurrent slow reads tie up further schedulers. The fix waits with `Task.yield_many` (a non-blocking sweep followed by a blocking wait with `timeout: :infinity`), so the process sleeps until a task completes instead of spinning.\n\nThis issue affects ash: from 2.19.0 before 3.32.2."
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}
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],
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"value": "Uncontrolled Resource Consumption vulnerability in ash-project ash lets a slow asynchronous read spin a scheduler thread at full CPU while the framework waits for it.\n\nAsh.Actions.Read.AsyncLimiter.await_at_least_one/1 (lib/ash/actions/read/async_limiter.ex) waited for concurrent async read tasks by polling each with Task.yield(task, 0) in a tight loop rather than blocking. While every outstanding task is still running (a slow related-data load or calculation), the loop returns immediately and repeats, busy-spinning and holding a BEAM scheduler at full CPU for the whole duration of the slow read; concurrent slow reads tie up further schedulers. The fix waits with Task.yield_many (a non-blocking sweep followed by a blocking wait with timeout: :infinity), so the process sleeps until a task completes instead of spinning.\n\nThis issue affects ash: from 2.19.0 before 3.32.2."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-227",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-227 Sustained Client Engagement"
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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": 2.1,
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"baseSeverity": "LOW",
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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:L/SC:N/SI:N/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "LOW",
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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-400",
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"description": "CWE-400 Uncontrolled Resource Consumption",
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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": "2026-09-01T03:37:24.292Z"
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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/ash-project/ash/security/advisories/GHSA-33wq-x3q2-c92h"
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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-2026-82743.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-2026-82743"
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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/ash-project/ash/commit/0a5ecd2ffdfa848afdeb8827f02982ef2a63a1cd"
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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": "Ash.Actions.Read.AsyncLimiter busy-spins a scheduler while awaiting slow async reads"
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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/ash-project/ash/security/advisories/GHSA-33wq-x3q2-c92h",
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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": "2026-09-01T12:39:40.600101Z",
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"id": "CVE-2026-82743",
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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": "2026-09-01T12:40:17.592Z"
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}
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}
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]
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}
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} |