{"cve":"CVE-2026-87012","nvd":{"published":"2026-09-09T21:17:06.030","modified":"2026-09-15T16:17:55.943","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","score":4.3},"cwes":["CWE-754","CWE-1287"],"references":["https://github.com/open-webui/open-webui/commit/abc69000b33b4894fbd97fc2c962139cf9a8d784","https://github.com/open-webui/open-webui/pull/28790","https://github.com/open-webui/open-webui/releases/tag/v0.11.1","https://github.com/open-webui/open-webui/security/advisories/GHSA-v39v-59xw-j98g"],"products":["openwebui:open_webui"],"source":"nvd","synced_at":"2026-10-19T22:52:53.108888569+00:00"},"epss":{"cve":"CVE-2026-87012","score":0.00484,"percentile":0.41749,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-v39v-59xw-j98g","url":"https://osv.dev/vulnerability/GHSA-v39v-59xw-j98g","summary":"Open WebUI: Any authenticated user can suppress calendar alerts instance-wide via a non-numeric alert value","modified":"2026-10-01T17:55:43.160146280Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":[">=0.9.0 <0.11.1"],"fixed":["0.11.1"]}]},{"id":"PYSEC-2026-4126","url":"https://osv.dev/vulnerability/PYSEC-2026-4126","summary":"Open WebUI: Any authenticated user can suppress calendar alerts instance-wide via a non-numeric alert value","modified":"2026-10-01T17:45:12.936168908Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":[">=0.9.0 <0.11.1"],"fixed":["0.11.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}