{"id":"CVE-2026-96760","title":"Authlib (v1.7.2 and below) contains a signature verification bypass vulnerability","summary":"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 f…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-20","CWE-347","CWE-358","CWE-670"],"vendor":"Authlib","product":"Authlib","affected":["Authlib 1.7.2"],"published":"2026-09-28","updated":"2026-10-01","sourceUpdated":"2026-10-01T14:17:32.147","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-96760","references":[{"url":"https://github.com/authlib/authlib","label":"cret@cert.org"},{"url":"https://kb.cert.org/vuls/id/762428","label":"cret@cert.org"},{"url":"https://www.kb.cert.org/vuls/id/762428","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-96760.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-96760"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2542633"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-96760"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96760"},{"url":"https://access.redhat.com/errata/RHSA-2026:79378"},{"url":"https://github.com/authlib/authlib/security/advisories/GHSA-6v38-4h7w-rj9h"},{"url":"https://github.com/authlib/authlib/pull/938"},{"url":"https://github.com/authlib/authlib/commit/6c11a02da8730914cea08ec195f1108a40dc6733"},{"url":"https://github.com/authlib/authlib/releases/tag/v1.9.0"},{"url":"https://github.com/advisories/GHSA-6v38-4h7w-rj9h"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat","ghsa","pip","osv","score-dispute"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-01T13:57:45.534196Z"},"epss":0.00383,"epssPercentile":0.32199,"exploits":{"github":1,"githubRepos":["https://github.com/uziii2208/CVE-2026-96760"],"checkedAt":"2026-10-27T19:24:31.044Z"},"exploitAvailable":true,"scores":{"nvd":9.8,"vendor":7.5,"ghsa":9.1,"osv":9.1},"ingestedAt":"2026-09-28T20:20:05.662Z","patched":["ansible_automation_platform 2.7"],"aliases":["GHSA-6v38-4h7w-rj9h"],"ecosystem":"pip","slug":"CVE-2026-96760","body":"## Overview\n\nAuthlib (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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Exploit Intelligence, Lightspeed Core, Migration Toolkit for Applications 8, OpenShift Lightspeed, Red Hat Ansible Automation Platform 2, Red Hat Enterprise Linux command line assistant, … · no fix planned: Exploit Intelligence, Lightspeed Core, Migration Toolkit for Applications 8, OpenShift Lightspeed, … · updated 2026-10-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-96760.json)\n- **RHSA-2026:79378** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.7 · released 2026-10-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:79378)\n\n## Package advisory (CVE-2026-96760)\n\nAffected packages:\n\n- `authlib <= 1.8.0`\n\nPatched in:\n\n- `authlib 1.9.0`\n\nSource: https://github.com/advisories/GHSA-6v38-4h7w-rj9h","depth":"abyssal","depthScore":66,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":214293,"id":"CVE-2026-96760","ts":1790866023604,"field":"cvss","old":"7.5","new":"9.8"},{"seq":214292,"id":"CVE-2026-96760","ts":1790866023604,"field":"severity","old":"high","new":"critical"},{"seq":213909,"id":"CVE-2026-96760","ts":1790799884456,"field":"exploit_available","old":"false","new":"true"},{"seq":212498,"id":"CVE-2026-96760","ts":1790668192203,"field":"cvss","old":null,"new":"7.5"},{"seq":212497,"id":"CVE-2026-96760","ts":1790668192203,"field":"severity","old":"none","new":"high"}]}