CVE-2026-70486 Details
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, the terminal file-preview serveUrl iframe branch always granted allow-same-origin together with allow-scripts for HTML files served from the application origin. Any authenticated user with access to a configured terminal server could cause script in a previewed file to run in the Open WebUI origin, read the victim's session token from localStorage, and take over the account, with possible server-side code execution if the victim was an admin or held workspace.functions. This issue is fixed in 0.11.0.
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Exploit prediction scoring system (EPSS) score for CVE-2026-70486
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%).
0.38 Probability of exploitation activity being observed over the next 30 days (32st percentile)
CVSS score for CVE-2026-70486
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.
8.2 High
Products affected by CVE-2026-70486
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-2026-70486 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 1,046 25.76%
DE 599 14.75%
CN 450 11.08%
GB 175 4.31%
KR 165 4.06%
SG 154 3.79%
FR 138 3.40%
RU 124 3.05%
JP 100 2.46%
NL 70 1.72%

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CVE-2026-70486 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 2,403 83.70%
Telecommunications 352 12.26%
Education 59 2.06%
Retail 11 0.38%
Government/Politics 10 0.35%
Business Services 6 0.21%
Media/Entertainment 5 0.17%
Engineering 4 0.14%
Manufacturing 4 0.14%
Transportation 4 0.14%

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