CVE-2026-96760

{"id": "CVE-2026-96760", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-96760", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-01T13:57:45.534196Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "cret@cert.org", "affectedData": [{"vendor": "Authlib", "product": "Authlib", "versions": [{"status": "affected", "version": "1.7.2"}]}]}], "published": "2026-09-28T20:17:11.703", "references": [{"url": "https://github.com/authlib/authlib", "source": "cret@cert.org"}, {"url": "https://kb.cert.org/vuls/id/762428", "source": "cret@cert.org"}, {"url": "https://www.kb.cert.org/vuls/id/762428", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-347"}, {"lang": "en", "value": "CWE-358"}, {"lang": "en", "value": "CWE-670"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-10-01T14:17:32.147", "sourceIdentifier": "cret@cert.org"}