{"id":"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.","aliases":["GHSA-v39v-59xw-j98g"],"modified":"2026-09-12T03:31:02.177869958Z","published":"2026-09-09T20:57:58.794Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-1287","CWE-754"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87012.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/open-webui/open-webui","events":[{"introduced":"f31768e20e5c6b4f6da0ef657877298b359936cf"},{"fixed":"abc69000b33b4894fbd97fc2c962139cf9a8d784"},{"fixed":"d3e8bf3405e848cfba377814d0aa7ba7290e414d"}],"database_specific":{"extracted_events":[{"introduced":"0.9.0"},{"fixed":"0.11.1"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v0.11.0","v0.10.2","v0.10.1","v0.10.0","v0.9.5","v0.9.4","v0.9.3","v0.9.2","v0.9.1","v0.9.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-87012.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:N/A:L"}]}