CVE-2026-54011 Details
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6,Open WebUI renders Mermaid blocks from Markdown files in the file preview panel and inserts the generated SVG into the DOM using innerHTML. Because Mermaid is configured with securityLevel: 'loose', attacker-controlled Mermaid content can be rendered unsafely in this flow. A working payload was validated through the Markdown preview path, resulting in JavaScript execution in the victim’s browser under the application origin. This vulnerability is fixed in 0.9.6.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-54011
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%).
0.23 Probability of exploitation activity being observed over the next 30 days (14th percentile)
CVSS score for CVE-2026-54011
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.
8.7 High
Products affected by CVE-2026-54011
Open Webui 0.6.17
Open Webui 0.6.18
Open Webui 0.6.2
Open Webui 0.6.22
Open Webui 0.6.25
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-2026-54011 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 2,521 25.84%
DE 1,461 14.97%
CN 1,142 11.70%
FR 385 3.95%
GB 373 3.82%
RU 358 3.67%
SG 356 3.65%
KR 313 3.21%
JP 203 2.08%
NL 182 1.87%

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CVE-2026-54011 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 5,861 83.47%
Telecommunications 897 12.77%
Education 123 1.75%
Retail 23 0.33%
Business Services 22 0.31%
Government/Politics 20 0.28%
Media/Entertainment 18 0.26%
Engineering 17 0.24%
Utilities 10 0.14%
Consumer Goods 8 0.11%

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