{"id":"CVE-2026-45667","aliases":["GHSA-m69w-p7m4-585j","PYSEC-2026-2747"],"url":"https://o3.security/vulnerability/CVE-2026-45667","summary":"Open WebUI: Unauthenticated endpoint can trigger embedding generation (cost/DoS)","details":"Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, GET /api/v1/memories/ef is accessible without authentication and executes request.app.state.EMBEDDING_FUNCTION(...). This allows any unauthenticated caller to trigger embedding generation which can lead to direct cost exposure if a paid provider is used. This vulnerability is fixed in 0.8.0.","published":"2026-05-15T21:41:43.155Z","modified":"2026-08-12T03:51:20.967814996Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"},"epss":{"score":0.00341,"percentile":0.26801,"asOf":"2026-08-09"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"open-webui","fixedVersion":"0.8.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45667.json"},{"type":"ADVISORY","url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-m69w-p7m4-585j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45667"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:20.967814996Z"}}