CVE-2026-54020 Details
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.11.0, Open WebUI resolved a hostname during URL validation and rejected private, loopback, and link-local addresses, but the HTTP clients resolved the hostname again at connection time. An authenticated attacker who controlled authoritative DNS for a submitted hostname could answer with a public address during validation and an internal one during connection, reaching cloud metadata, loopback admin APIs, or internal services through URL ingest, chat image_url fetches, image editing, or OAuth profile-picture fetches, with most paths returning the response to the attacker and the OAuth path forwarding the OAuth access token. This issue is fixed in 0.11.0.
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Exploit prediction scoring system (EPSS) score for CVE-2026-54020
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%).
0.25 Probability of exploitation activity being observed over the next 30 days (16th percentile)
CVSS score for CVE-2026-54020
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.
6.3 Medium
Products affected by CVE-2026-54020
Open Webui 0.6.7
Open Webui 0.7.2
Open Webui 0.8.0
Open Webui 0.8.1
Open Webui 0.8.10
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-2026-54020 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 2,310 25.51%
DE 1,292 14.27%
CN 1,267 13.99%
SG 337 3.72%
FR 325 3.59%
GB 323 3.57%
KR 294 3.25%
RU 271 2.99%
JP 213 2.35%
NL 152 1.68%

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CVE-2026-54020 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 5,567 83.88%
Telecommunications 809 12.19%
Education 136 2.05%
Government/Politics 21 0.32%
Retail 21 0.32%
Media/Entertainment 16 0.24%
Engineering 14 0.21%
Business Services 8 0.12%
Utilities 7 0.11%
Manufacturing 7 0.11%

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