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CVE-2026-87012

Open WebUI: Any authenticated user can suppress calendar alerts instance-wide via a non-numeric alert value PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
open-webui / open-webuiaffected >= 0.9.0, < 0.11.1

CWE

CWE-754, CWE-1287

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.