{"id":"CVE-2026-104056","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-104056","generatedAt":"2026-10-23T21:17:43.259Z","title":"Authlib version 1.7.2 and below contains a vulnerability where discovery JSON metadata is cached without validation or issuer-origin binding.","description":"Authlib version 1.7.2 and below contains a vulnerability where discovery JSON metadata is cached without validation or issuer-origin binding. This allows a poisoned discovery response to replace all endpoint values with attacker-controlled values rather than endpoint URLs that share the origin of the configured server metadata URL.","published":"2026-10-01T19:17:19.000Z","lastModified":"2026-10-05T19:17:14.000Z","status":"Awaiting Analysis","sourceIdentifier":"cret@cert.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-345","CWE-346","CWE-829"],"affected":[],"epss":{"score":0.00167,"percentile":0.05683,"date":"2026-10-22","history":[{"date":"2026-10-02","score":0.00097,"percentile":0.00686}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-05T21:15:06.000Z","detail":{"from":null,"score":"9.8","severity":"CRITICAL","fromSeverity":null},"summary":"Now scored CVSS 9.8 CRITICAL."},{"kind":"new","label":"New CVE","at":"2026-10-01T19:17:19.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-01T19:17:19.033Z"},"summary":"New CVE, critical severity (CVSS 9.8)."}],"references":[{"url":"https://uziii2208.github.io/post/cve-2026-104056/","source":"cret@cert.org"},{"url":"https://uziii2208.github.io/post/cve-2026-104056/","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-104056","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}