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CVE-2026-87012

🔶 medium
🔍 Scan for this CVE
Summary

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

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 Score
4.3
Medium
EPSS Score
0.3
Exploit Probability
Published Date
2026-09-09
First Seen: 2026-09-11
📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 5.3% of all 360,548 vulnerabilities in our database.

#341,305
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Sep 10, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
SSVC data provided by CISA
Last Modified 2026-09-15
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE IDs (Weakness Types)
CWE-754 CWE-1287

📦 Affected Products 1

Vendor Product Status Affected Versions
openwebui open_webui Affected
> 0.9.0 < 0.11.1

🔗 References 4

https://github.com/open-webui/open-webui/commit/abc6...
Patch
https://github.com/open-webui/open-webui/pull/28790
Issue Tracking Patch
https://github.com/open-webui/open-webui/releases/ta...
Release Notes
https://github.com/open-webui/open-webui/security/ad...
Exploit Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-88005 🔶 medium 6.5 0.2 Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.9.0, Open WebUI... 2026-09-10
CVE-2026-88006 🔶 medium 6.5 0.2 Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.11.1, Open WebU... 2026-09-10
CVE-2026-87011 ⚠️ high 7.5 0.4 Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, the unaut... 2026-09-09
CVE-2026-87013 🔶 medium 4.3 0.3 Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, POST /ap... 2026-09-09
CVE-2026-87014 🔶 medium 6.5 0.3 Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, role sync... 2026-09-09
CVE-2026-87015 🔶 medium 6.8 0.3 Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.27 until 0.11.1, backend/... 2026-09-09
These CVEs affect the same products