{"id":"CVE-2026-88006","aliases":["GHSA-wvm9-9g5j-623f"],"url":"https://o3.security/vulnerability/CVE-2026-88006","summary":"Open WebUI: Users denied by the OAuth role policy can still sign in via token exchange","details":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.11.1, Open WebUI's OAuth token exchange endpoint issues a session for a provider access token without running the OAuth role management that the normal OAuth login callback runs. A user whose provider roles the login callback would refuse, or would demote, could still obtain a working session at their existing role through this endpoint. This issue is fixed in version 0.11.1.","published":"2026-09-10T14:43:17.538Z","modified":"2026-09-12T03:47:21.115678221Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},"epss":{"score":0.00217,"percentile":0.12286,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"open-webui","fixedVersion":"0.11.1"}],"fix":{"url":"https://github.com/open-webui/open-webui/commit/d799e81edbdc971c6deb096b6474cd95b93504bf","label":"open-webui/open-webui@d799e81"},"references":[{"type":"WEB","url":"https://github.com/open-webui/open-webui/releases/tag/v0.11.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88006.json"},{"type":"ADVISORY","url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-wvm9-9g5j-623f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88006"},{"type":"FIX","url":"https://github.com/open-webui/open-webui/commit/d799e81edbdc971c6deb096b6474cd95b93504bf"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-12T03:47:21.115678221Z"}}