CVE-2026-87012 Details
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.
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Exploit prediction scoring system (EPSS) score for CVE-2026-87012
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.48 Probability of exploitation activity being observed over the next 30 days (42st percentile)
CVSS score for CVE-2026-87012
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
4.3 Medium
Products affected by CVE-2026-87012
Open Webui 0.9.0
Open Webui 0.9.1
Open Webui 0.9.2
Open Webui 0.9.3
Open Webui 0.9.4
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-87012 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 1,534 26.67%
DE 849 14.76%
CN 595 10.35%
GB 234 4.07%
KR 210 3.65%
FR 197 3.43%
SG 195 3.39%
RU 183 3.18%
JP 137 2.38%
NL 97 1.69%

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CVE-2026-87012 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 3,332 82.29%
Telecommunications 546 13.48%
Education 91 2.25%
Retail 13 0.32%
Government/Politics 10 0.25%
Media/Entertainment 10 0.25%
Manufacturing 9 0.22%
Engineering 7 0.17%
Business Services 7 0.17%
Transportation 5 0.12%

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