{"id":"CVE-2025-63681","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.","aliases":["GHSA-frv8-gffc-37px","PYSEC-2026-1732"],"modified":"2026-08-12T03:51:25.122539364Z","published":"2025-12-04T00:00:00Z","database_specific":{"cna_assigner":"mitre","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/63xxx/CVE-2025-63681.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/open-webui/open-webui","events":[{"introduced":"6f1486ffd0cb288d0e21f41845361924e0d742b3"},{"last_affected":"6f1486ffd0cb288d0e21f41845361924e0d742b3"}],"database_specific":{"cpe":"cpe:2.3:a:openwebui:open_webui:0.6.41:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0.6.41"},{"last_affected":"0.6.41"}],"source":"CPE_STRING"}}],"versions":["0.6.41","v0.6.41"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-63681.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"}]}