# CVE-2026-87012

## Summary

- **CVE ID:** CVE-2026-87012
- **Severity:** MEDIUM
- **CVSS Score:** 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
- **CWE:** CWE-754, CWE-1287
- **Published:** Sep 9, 2026
- **Last Modified:** Sep 9, 2026

## 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.

## Affected Products

- open-webui — open-webui (>= 0.9.0, < 0.11.1)

## References

- [CNA](https://github.com/open-webui/open-webui/security/advisories/GHSA-v39v-59xw-j98g)
- [CNA](https://github.com/open-webui/open-webui/pull/28790)
- [CNA](https://github.com/open-webui/open-webui/commit/abc69000b33b4894fbd97fc2c962139cf9a8d784)
- [CNA](https://github.com/open-webui/open-webui/releases/tag/v0.11.1)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._