{"id":"CVE-2026-96760","summary":"Authlib library contains a signature‑verification bypass vulnerability","details":"Authlib (v1.7.2 and below) contains a signature verification bypass vulnerability. The JsonWebSignature.deserialize_json() method accepts a JSON Serialization JWS object and returns the payload as successfully verified without checking for a signature and without requiring a cryptographic key.","aliases":["GHSA-6v38-4h7w-rj9h"],"modified":"2026-11-03T17:27:21.231917483Z","published":"2026-09-28T19:37:58.973Z","related":["openSUSE-SU-2026:12390-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/96xxx/CVE-2026-96760.json","cna_assigner":"certcc"},"references":[{"type":"WEB","url":"https://kb.cert.org/vuls/id/762428"},{"type":"WEB","url":"https://www.kb.cert.org/vuls/id/762428"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/96xxx/CVE-2026-96760.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96760"},{"type":"PACKAGE","url":"https://github.com/authlib/authlib"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/authlib/authlib","events":[{"introduced":"a0b76fac3fa114d7759af2010546bfc332364b63"},{"last_affected":"a0b76fac3fa114d7759af2010546bfc332364b63"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandaloneSingleVersion","range":[{"introduced":"1.7.2"},{"last_affected":"1.7.2"}]},{"range":[{"introduced":"0"},{"last_affected":"1.7.2"}],"source":"DESCRIPTION"}]}}],"versions":["1.7.2","v1.7.2"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-96760.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}