{"affected":[{"product":"Authlib","source":"CNA: certcc","vendor":"Authlib","versions":[{"status":"affected","version":"1.8.0"}]}],"cveId":"CVE-2026-96760","cwes":["CWE-347","CWE-670","CWE-358","CWE-20"],"description":"Authlib (v1.8.0 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.","epss":{"date":"2026-11-10","percentile":0.37908,"score":0.00433},"exploits":[],"kev":null,"metrics":[{"score":9.8,"severity":"critical","source":"ADP: CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},{"score":9.8,"severity":"critical","source":"NVD: 134c704f-9b21-4f2e-91b3-4a467353bcc0","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794413845750,"publishedAt":1790624278973,"references":[{"source":"CNA: certcc","tags":[],"url":"https://github.com/authlib/authlib"},{"source":"CNA: certcc","tags":[],"url":"https://kb.cert.org/vuls/id/762428"},{"source":"ADP: CVE","tags":[],"url":"https://www.kb.cert.org/vuls/id/762428"},{"source":"cret@cert.org","tags":[],"url":"https://github.com/authlib/authlib"},{"source":"cret@cert.org","tags":[],"url":"https://kb.cert.org/vuls/id/762428"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"url":"https://www.kb.cert.org/vuls/id/762428"}],"remediation":[],"revision":"6150a522f0fd8287ca7002225ab502b33fd4337ca7426836a79d0dcb0b6ddb0a","sources":[{"modifiedAt":1794412019138,"name":"CNA: certcc","retrievedAt":1794413447027,"url":"https://www.cve.org/CVERecord?id=CVE-2026-96760"},{"modifiedAt":1794413845750,"name":"NVD","retrievedAt":1794420965949,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96760"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794413449023,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-96760"}],"ssvc":{"assessedAt":1790863065534,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Authlib library contains a signature‑verification bypass vulnerability","updatedAt":1794420965949}