147 lines
6.2 KiB
JSON
147 lines
6.2 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-2026-107724",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-10-08T17:21:52.976Z",
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"datePublished": "2026-10-08T21:53:01.909Z",
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"dateUpdated": "2026-10-09T15:51:27.488Z"
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},
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"containers": {
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"cna": {
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"title": "fast-jwt treats raw public JWK JSON as an HMAC secret, enabling HS256 token forgery",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-347",
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"lang": "en",
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"description": "CWE-347: Improper Verification of Cryptographic Signature",
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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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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 7.4,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/nearform/fast-jwt/security/advisories/GHSA-g3jj-5cmm-3hxx",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/nearform/fast-jwt/security/advisories/GHSA-g3jj-5cmm-3hxx"
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},
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{
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"name": "https://github.com/nearform/fast-jwt/pull/636",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/nearform/fast-jwt/pull/636"
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},
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{
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"name": "https://github.com/nearform/fast-jwt/commit/10f9591349199ed2ab9fa1748ce92cdca697f6cf",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/nearform/fast-jwt/commit/10f9591349199ed2ab9fa1748ce92cdca697f6cf"
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},
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{
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"name": "https://github.com/nearform/fast-jwt/releases/tag/v6.3.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/nearform/fast-jwt/releases/tag/v6.3.0"
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}
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],
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"affected": [
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{
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"vendor": "nearform",
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"product": "fast-jwt",
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"versions": [
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{
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"version": ">= 6.2.4, < 6.3.0",
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"status": "affected"
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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": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-10-08T21:53:01.909Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "fast-jwt provides fast JSON Web Token (JWT) implementation. In 6.2.4, fast-jwt can classify raw serialized public JWK or JWKS JSON as an HMAC secret because src/crypto.js performDetectPublicKeyAlgorithms treats non-PEM strings as symmetric key material. If HS256 is explicitly allowed or inferred, an attacker who knows the exact serialized public-key bytes can use those bytes as an HMAC key and create a token containing arbitrary claims that createVerifier accepts. Serialization ordering or whitespace differences can prevent exploitation, and applications using supported PEM keys with an asymmetric-only algorithm allowlist are not affected. This issue is fixed in version 6.3.0."
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}
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],
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"source": {
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"advisory": "GHSA-g3jj-5cmm-3hxx",
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"discovery": "UNKNOWN"
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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/nearform/fast-jwt/security/advisories/GHSA-g3jj-5cmm-3hxx",
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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": "2026-10-09T15:51:21.495223Z",
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"id": "CVE-2026-107724",
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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": "total"
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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": "2026-10-09T15:51:27.488Z"
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}
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}
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]
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}
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} |