Improper Validation of Specified Type of Input Affecting open-webui package, versions [0.9.0,0.11.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-OPENWEBUI-20158710
- published27 Sept 2026
- disclosed10 Sept 2026
- creditUnknown
Introduced: 10 Sep 2026
NewCVE-2026-87012 (opens in a new tab)How to fix?
Upgrade open-webui to version 0.11.1 or higher.
Overview
open-webui is an Open WebUI
Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input via the meta object in calendar events, which is stored without validation. An attacker can disrupt calendar alert functionality for all users by submitting a non-numeric alert value, causing the scheduler's alert pass to abort and suppressing all calendar reminders instance-wide until the problematic event leaves the lookahead window or is deleted. This is only exploitable if the calendar feature is enabled and the attacker holds the calendar feature permission.