CVE-2026-54017 Details
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, the terminal-server reverse proxy in `backend/open_webui/routers/terminals.py` does not fully confine the user-controlled `path` segment before forwarding it to an admin-configured terminal server. An authenticated user who has been granted access to a terminal server can craft `path` values containing encoded `../` traversal sequences that escape the intended path (or policy) scope on that server, reaching unintended endpoints and files on the terminal-server host. Where the terminal server fans requests out to internal services, this also gives SSRF-style reach into those services. This is a separate code path from the `/api/v1/retrieval/process/web` SSRF (GHSA-c6xv-rcvw-v685), with its own input. Two distinct vectors are consolidated here: first, raw path forwarding / single-encoded traversal (original report); and second, a bypass of the subsequently-added `_sanitize_proxy_path` mitigation using double-encoded dots (`%252e%252e`). The attacker-controlled input is the request `path`, supplied by the non-admin user, not anything an administrator configures, so this is not an admin-trust / Rule-9 situation. Version 0.9.6 fixes the issue.
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Exploit prediction scoring system (EPSS) score for CVE-2026-54017
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%).
0.35 Probability of exploitation activity being observed over the next 30 days (27th percentile)
CVSS score for CVE-2026-54017
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-2026-54017
Open Webui 0.6.0
Open Webui 0.6.10
Open Webui 0.6.13
Open Webui 0.6.15
Open Webui 0.6.16
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-2026-54017 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 1,053 24.39%
DE 665 15.40%
CN 510 11.81%
GB 178 4.12%
FR 175 4.05%
RU 169 3.91%
SG 168 3.89%
KR 141 3.27%
JP 101 2.34%
NL 88 2.04%

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CVE-2026-54017 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 2,620 83.89%
Telecommunications 377 12.07%
Education 67 2.15%
Business Services 13 0.42%
Retail 10 0.32%
Engineering 8 0.26%
Government/Politics 7 0.22%
Media/Entertainment 7 0.22%
Utilities 6 0.19%
Energy/Resources 3 0.10%

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