318 lines
16 KiB
JSON
318 lines
16 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-2026-65627",
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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": "2026-07-22T13:58:26.233Z",
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"datePublished": "2026-10-26T19:53:16.336Z",
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"dateUpdated": "2026-11-02T21:25:56.908Z"
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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:potatosalad:jose:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"jose_jwe_zip",
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"jose_jwe",
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"'Elixir.JOSE.JWE'"
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],
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"packageName": "jose",
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"packageURL": "pkg:hex/jose",
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"product": "jose",
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"programFiles": [
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"src/jwe/jose_jwe_zip.erl",
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"src/jwe/jose_jwe.erl",
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"lib/jose/jwe.ex"
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],
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"programRoutines": [
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{
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"name": "jose_jwe_zip:uncompress/2"
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},
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{
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"name": "jose_jwe:block_decrypt/2"
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},
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{
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"name": "'Elixir.JOSE.JWE':block_decrypt/2"
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}
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],
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"repo": "https://github.com/potatosalad/erlang-jose",
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"vendor": "potatosalad",
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"versions": [
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{
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"lessThan": "1.11.13",
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"status": "affected",
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"version": "1.0.0",
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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:potatosalad:jose:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"jose_jwe_zip",
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"jose_jwe",
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"'Elixir.JOSE.JWE'"
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],
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"packageName": "potatosalad/erlang-jose",
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"packageURL": "pkg:github/potatosalad/erlang-jose",
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"product": "jose",
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"programFiles": [
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"src/jwe/jose_jwe_zip.erl",
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"src/jwe/jose_jwe.erl",
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"lib/jose/jwe.ex"
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],
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"programRoutines": [
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{
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"name": "jose_jwe_zip:uncompress/2"
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},
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{
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"name": "jose_jwe:block_decrypt/2"
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},
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{
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"name": "'Elixir.JOSE.JWE':block_decrypt/2"
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}
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],
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"repo": "https://github.com/potatosalad/erlang-jose",
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"vendor": "potatosalad",
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"versions": [
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{
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"lessThan": "857eb8e7f2d33e2c9ca2189e77226561cacaf2ad",
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"status": "affected",
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"version": "a7746ecd4950f85a393136e449a91dac62b5c429",
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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:potatosalad:jose:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "1.11.13",
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"versionStartIncluding": "1.0.0",
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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": "Peter Ullrich"
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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": "Andrew Bennett"
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},
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{
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"lang": "en",
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"type": "analyst",
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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>Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in potatosalad jose (erlang-jose) allows a remote attacker to exhaust a node's memory with a small crafted JWE token.</p>\n<p>The <code>jose_jwe_zip:uncompress/2</code> function in <code>src/jwe/jose_jwe_zip.erl</code> decompresses the DEFLATE-compressed plaintext of a JWE that carries the optional <code>zip: DEF</code> header by calling <code>zlib:inflate/2</code> on the entire attacker-controlled stream, with no bound on the output size or the inflation ratio. Raw DEFLATE reaches ratios around 1000:1 on highly repetitive input, so a few-kilobyte token inflates to hundreds of megabytes or gigabytes in a single call.</p>\n<p>Decompression runs automatically during decryption through <code>jose_jwe:block_decrypt/2</code> (<code>JOSE.JWE.block_decrypt/2</code> in Elixir), before the recipient can inspect or reject the payload. With the common asymmetric key-management algorithms (RSA-OAEP, ECDH-ES) an attacker needs only the recipient's public key to craft such a token, so no authentication or secret material is required. A single small token can exhaust the node's memory and crash the BEAM, denying service to all users.</p>\n<p>This issue affects jose: from 1.0.0 before 1.11.13.</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": "Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in potatosalad jose (erlang-jose) allows a remote attacker to exhaust a node's memory with a small crafted JWE token.\n\nThe `jose_jwe_zip:uncompress/2` function in `src/jwe/jose_jwe_zip.erl` decompresses the DEFLATE-compressed plaintext of a JWE that carries the optional `zip: DEF` header by calling `zlib:inflate/2` on the entire attacker-controlled stream, with no bound on the output size or the inflation ratio. Raw DEFLATE reaches ratios around 1000:1 on highly repetitive input, so a few-kilobyte token inflates to hundreds of megabytes or gigabytes in a single call.\n\nDecompression runs automatically during decryption through `jose_jwe:block_decrypt/2` (`JOSE.JWE.block_decrypt/2` in Elixir), before the recipient can inspect or reject the payload. With the common asymmetric key-management algorithms (RSA-OAEP, ECDH-ES) an attacker needs only the recipient's public key to craft such a token, so no authentication or secret material is required. A single small token can exhaust the node's memory and crash the BEAM, denying service to all users.\n\nThis issue affects jose: from 1.0.0 before 1.11.13."
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}
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],
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"value": "Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in potatosalad jose (erlang-jose) allows a remote attacker to exhaust a node's memory with a small crafted JWE token.\n\nThe jose_jwe_zip:uncompress/2 function in src/jwe/jose_jwe_zip.erl decompresses the DEFLATE-compressed plaintext of a JWE that carries the optional zip: DEF header by calling zlib:inflate/2 on the entire attacker-controlled stream, with no bound on the output size or the inflation ratio. Raw DEFLATE reaches ratios around 1000:1 on highly repetitive input, so a few-kilobyte token inflates to hundreds of megabytes or gigabytes in a single call.\n\nDecompression runs automatically during decryption through jose_jwe:block_decrypt/2 (JOSE.JWE.block_decrypt/2 in Elixir), before the recipient can inspect or reject the payload. With the common asymmetric key-management algorithms (RSA-OAEP, ECDH-ES) an attacker needs only the recipient's public key to craft such a token, so no authentication or secret material is required. A single small token can exhaust the node's memory and crash the BEAM, denying service to all users.\n\nThis issue affects jose: from 1.0.0 before 1.11.13."
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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": "NONE",
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"attackVector": "LOCAL",
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"baseScore": 6.9,
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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:N/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-409",
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"description": "CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)",
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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": "2026-10-26T19:53:16.336Z"
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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/potatosalad/erlang-jose/security/advisories/GHSA-wfpv-qxp8-x5gm"
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},
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{
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"name": "EEF CNA record for CVE-2026-65627",
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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-2026-65627.html"
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},
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{
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"name": "OSV record EEF-CVE-2026-65627",
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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-2026-65627"
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},
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{
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"name": "Introducing commit a7746ec in potatosalad/erlang-jose",
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"tags": [
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"related"
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],
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"url": "https://github.com/potatosalad/erlang-jose/commit/a7746ecd4950f85a393136e449a91dac62b5c429"
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},
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{
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"name": "Fix commit 857eb8e in potatosalad/erlang-jose",
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"tags": [
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"patch"
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],
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"url": "https://github.com/potatosalad/erlang-jose/commit/857eb8e7f2d33e2c9ca2189e77226561cacaf2ad"
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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": "Decompression bomb via unbounded zlib:inflate in jose_jwe_zip:uncompress/2",
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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>Reject JWE tokens that carry a <code>zip</code> header before passing them to <code>jose_jwe:block_decrypt/2</code>. DEFLATE compression is rarely used in legitimate JWE traffic, so untrusted tokens whose protected header contains <code>zip: DEF</code> can be inspected and filtered out before decryption.</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": "Reject JWE tokens that carry a `zip` header before passing them to `jose_jwe:block_decrypt/2`. DEFLATE compression is rarely used in legitimate JWE traffic, so untrusted tokens whose protected header contains `zip: DEF` can be inspected and filtered out before decryption."
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}
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],
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"value": "Reject JWE tokens that carry a zip header before passing them to jose_jwe:block_decrypt/2. DEFLATE compression is rarely used in legitimate JWE traffic, so untrusted tokens whose protected header contains zip: DEF can be inspected and filtered out before decryption."
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}
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]
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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/potatosalad/erlang-jose/security/advisories/GHSA-wfpv-qxp8-x5gm",
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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": "2026-11-02T21:25:06.662495Z",
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"id": "CVE-2026-65627",
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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": "2026-11-02T21:25:56.908Z"
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}
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}
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]
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}
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} |