{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-102269",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-09-28T20:11:16.658Z",
        "datePublished": "2026-09-28T20:27:54.521Z",
        "dateUpdated": "2026-09-28T20:27:54.521Z"
    },
    "containers": {
        "cna": {
            "title": "PyJWT: Non-canonical signature segments enable raw-token revocation bypass",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-180",
                            "lang": "en",
                            "description": "CWE-180: Incorrect Behavior Order: Validate Before Canonicalize",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 4.8,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/jpadilla/pyjwt/security/advisories/GHSA-hxm8-2xgr-2p9m",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/jpadilla/pyjwt/security/advisories/GHSA-hxm8-2xgr-2p9m"
                },
                {
                    "name": "https://github.com/jpadilla/pyjwt/commit/e6f48401001609a8f99e71fcaf355fb895d508a8",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/jpadilla/pyjwt/commit/e6f48401001609a8f99e71fcaf355fb895d508a8"
                },
                {
                    "name": "https://github.com/jpadilla/pyjwt/releases/tag/2.14.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/jpadilla/pyjwt/releases/tag/2.14.0"
                }
            ],
            "affected": [
                {
                    "vendor": "jpadilla",
                    "product": "pyjwt",
                    "versions": [
                        {
                            "version": "< 2.14.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-28T20:27:54.521Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT signature segment is affected because signature segment decoding accepts characters outside the canonical Base64URL representation. This occurs when non-Base64URL characters are appended to a valid compact JWS signature segment. As a result, base64url_decode produces the same signature bytes for different serialized segments. Consequently, raw-token revocation checks can fail to recognize an equivalent modified token. This issue is fixed in version 2.14.0."
                }
            ],
            "source": {
                "advisory": "GHSA-hxm8-2xgr-2p9m",
                "discovery": "UNKNOWN"
            }
        }
    }
}