{"id":"CVE-2025-63681","aliases":["GHSA-frv8-gffc-37px","PYSEC-2026-1732"],"url":"https://o3.security/vulnerability/CVE-2025-63681","summary":"open-webui is Vulnerable to Incorrect Access Control","details":"open-webui v0.6.33 is vulnerable to Incorrect Access Control. The API /api/tasks/stop/ directly accesses and cancels tasks without verifying user ownership, enabling attackers (a normal user) to stop arbitrary LLM response tasks.","published":"2025-12-04T00:00:00Z","modified":"2026-08-07T11:31:07.486922420Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"open-webui","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/TOAST-Research/pocs/blob/main/openwebui/arbitirary_task_stop/report.md"},{"type":"WEB","url":"https://github.com/open-webui/open-webui/blob/46ae3f4f5d7d4d706041bdae4ad2d802e568712b/backend/open_webui/main.py#L1652"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/63xxx/CVE-2025-63681.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-63681"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:31:07.486922420Z"}}