CVE-2026-87995 Details
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.11 until 0.11.1, src/lib/components/chat/FileNav/PortPreview.svelte rendered terminal port content in an iframe sandbox containing both allow-scripts and allow-same-origin. Because the terminal proxy serves that content from the Open WebUI origin, an authenticated user with access to a shared terminal server could host script on a previewed port and take over a victim's account when the victim opened the preview. This issue is fixed in version 0.11.1.
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Exploit prediction scoring system (EPSS) score for CVE-2026-87995
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%).
0.42 Probability of exploitation activity being observed over the next 30 days (36th percentile)
CVSS score for CVE-2026-87995
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-2026-87995
Open Webui 0.8.11
Open Webui 0.8.12
Open Webui 0.9.0
Open Webui 0.9.1
Open Webui 0.9.2
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-2026-87995 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 1,684 26.14%
DE 959 14.89%
CN 678 10.52%
GB 260 4.04%
KR 233 3.62%
SG 227 3.52%
FR 221 3.43%
RU 200 3.10%
JP 157 2.44%
CA 113 1.75%

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CVE-2026-87995 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 3,749 81.86%
Telecommunications 629 13.73%
Education 105 2.29%
Retail 17 0.37%
Government/Politics 13 0.28%
Media/Entertainment 11 0.24%
Manufacturing 10 0.22%
Engineering 8 0.17%
Business Services 7 0.15%
Energy/Resources 6 0.13%

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