CVE-2026-59221 Details
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 before 0.10.0, _sanitize_proxy_path in backend/open_webui/routers/terminals.py decoded proxy paths only eight times, allowing a nine-times percent-encoded ../ traversal value to pass normalization checks and be decoded by the upstream terminal server. This issue is fixed in version 0.10.0.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-59221
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%).
0.36 Probability of exploitation activity being observed over the next 30 days (29th percentile)
CVSS score for CVE-2026-59221
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.
7.7 High
Products affected by CVE-2026-59221
Open Webui 0.9.6
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-2026-59221 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 676 27.38%
DE 406 16.44%
CN 188 7.61%
GB 121 4.90%
RU 112 4.54%
SG 93 3.77%
FR 88 3.56%
KR 65 2.63%
NL 50 2.03%
IR 49 1.98%

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CVE-2026-59221 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 1,418 82.06%
Telecommunications 241 13.95%
Education 29 1.68%
Government/Politics 7 0.41%
Engineering 5 0.29%
Media/Entertainment 4 0.23%
Retail 4 0.23%
Healthcare/Wellness 4 0.23%
Nonprofit/NGO 3 0.17%
Business Services 3 0.17%

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