{"id":"CVE-2026-114619","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-114619","generatedAt":"2026-10-27T23:51:02.037Z","title":"Prior to 1.9.0, OpenIDImplicitGrant.validate_authorization_request() checks the client-controlled raw request.payload.scope for openid after the parent grant has filtered allowed scopes into request.scope.","description":"Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, OpenIDImplicitGrant.validate_authorization_request() checks the client-controlled raw request.payload.scope for openid after the parent grant has filtered allowed scopes into request.scope. A registered client permitted an ID token response type but not the openid scope can add openid to the request, obtain user consent, and receive a signed ID token containing the user's subject and allowed profile claims. Authorization code flow and deployments that allow openid for every client permitted an ID token response are not affected. In authlib/oidc/core/grants/implicit.py, OpenIDImplicitGrant.validate_authorization_request() checks request.payload.scope instead of the filtered request.scope. This issue is fixed in version 1.9.0.","published":"2026-10-22T22:18:05.000Z","lastModified":"2026-10-23T19:34:14.000Z","status":"Undergoing Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":4.6,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N"},"cwe":["CWE-863"],"affected":[],"epss":{"score":0.00157,"percentile":0.04806,"date":"2026-10-26","history":[{"date":"2026-10-23","score":0.00157,"percentile":0.04466}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-22T22:18:05.000Z","detail":{"score":"4.6","severity":"MEDIUM","publishedAt":"2026-10-22T22:18:04.930Z"},"summary":"New CVE, medium severity (CVSS 4.6)."}],"references":[{"url":"https://github.com/authlib/authlib/commit/e3bd41cb29dcfee434453b135ffb487884baeedf","source":"security-advisories@github.com"},{"url":"https://github.com/authlib/authlib/pull/945","source":"security-advisories@github.com"},{"url":"https://github.com/authlib/authlib/releases/tag/v1.9.0","source":"security-advisories@github.com"},{"url":"https://github.com/authlib/authlib/security/advisories/GHSA-q686-2qmg-hqc7","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-114619","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."}