{"id":"CVE-2026-87012","aliases":["GHSA-v39v-59xw-j98g"],"url":"https://o3.security/vulnerability/CVE-2026-87012","summary":"Open WebUI: Any authenticated user can suppress calendar alerts instance-wide via a non-numeric alert value","details":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, backend/open_webui/models/calendar.py stored the calendar event meta.alert_minutes value without type validation and the shared upcoming-event scheduler compared that value numerically. An authenticated user with the calendar permission could store a non-numeric alert_minutes value that raised an exception and aborted the instance-wide alert pass, suppressing all users' reminders while the event remained in the lookahead window. This issue is fixed in version 0.11.1.","published":"2026-09-09T20:57:58.794Z","modified":"2026-09-12T03:31:02.177869958Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"open-webui","fixedVersion":"0.11.1"}],"fix":{"url":"https://github.com/open-webui/open-webui/commit/abc69000b33b4894fbd97fc2c962139cf9a8d784","label":"open-webui/open-webui@abc6900"},"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/2026/87xxx/CVE-2026-87012.json"},{"type":"ADVISORY","url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-v39v-59xw-j98g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87012"},{"type":"FIX","url":"https://github.com/open-webui/open-webui/commit/abc69000b33b4894fbd97fc2c962139cf9a8d784"},{"type":"FIX","url":"https://github.com/open-webui/open-webui/pull/28790"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-12T03:31:02.177869958Z"}}