Open WebUI IDOR: Calendar event re-parenting allows writing events into another user's calendar

SummaryPOST /api/v1/calendars/events/eventid/update validates that the caller has write access to the calendar the event currently belongs to, but does not validate the destination calendarid supplied in the request body. The model layer then persists the new calendarid unconditionally.A regular...

PT-2026-59365

Summary POST /api/v1/calendars/events/event id/update validates that the caller has write access to the calendar the event currently belongs to, but does not validate the destination calendar id supplied in the request body. The model layer then persists the new calendar id unconditionally. A...

EUVD-2026-38535

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, POST /api/v1/calendars/events/eventid/update validates that the caller has write access to the calendar the event currently belongs to, but does not validate the destination calendar...

Open WebUI IDOR: Calendar event re-parenting allows writing events into another user's calendar

Summary POST /api/v1/calendars/events/eventid/update validates that the caller has write access to the calendar the event currently belongs to, but does not validate the destination calendarid supplied in the request body. The model layer then persists the new calendarid unconditionally. A regula...

GHSA-F3G7-59QC-PQG6 Open WebUI IDOR: Calendar event re-parenting allows writing events into another user's calendar

Summary POST /api/v1/calendars/events/eventid/update validates that the caller has write access to the calendar the event currently belongs to, but does not validate the destination calendarid supplied in the request body. The model layer then persists the new calendarid unconditionally. A regula...

PT-2026-50478

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.6 Description An authorization bypass exists in the calendar event update process. The endpoint '/api/v1/calendars/events/event id/update' validates that the user has write access to the calendar where the even...