CVE-2026-70492 Details
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.0, src/lib/components/chat/Messages/Markdown/KatexRenderer.svelte could store and render a chat message whose math block makes KaTeX fail with a stack overflow instead of a parse error. The catch branch fell back to inserting the original math source into the page as HTML through {@html} rather than as text, so script in the message runs in the browser of whoever views it, including shared chats and channels. The viewer's session token in localStorage can be stolen, and an administrator viewer can have their account taken over. This issue is fixed in 0.11.0.
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Exploit prediction scoring system (EPSS) score for CVE-2026-70492
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%).
0.27 Probability of exploitation activity being observed over the next 30 days (19th percentile)
CVSS score for CVE-2026-70492
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-2026-70492
Open Webui 0.10.1
Open Webui 0.10.2
Open Webui 0.10.0
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-2026-70492 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 18 13.95%
DE 18 13.95%
CN 14 10.85%
RU 12 9.30%
GB 8 6.20%
BR 5 3.88%
HK 5 3.88%
TW 4 3.10%
IN 3 2.33%
SG 3 2.33%

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CVE-2026-70492 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 62 77.50%
Telecommunications 13 16.25%
Education 3 3.75%
Business Services 1 1.25%
Engineering 1 1.25%

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