CVE-2026-45671 Details
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, any authenticated user can permanently delete files owned by other users via DELETE /api/v1/files/{id} when the target file is referenced in any shared chat. The has_access_to_file() authorization gate unconditionally grants access through its shared-chat branch. It checks neither the requesting user's identity nor the type of operation being performed. File UUIDs (which would otherwise be impractical to guess) are disclosed to any user with read access to a knowledge base via GET /api/v1/knowledge/{id}/files. This vulnerability is fixed in 0.9.0.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-45671
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%).
0.27 Probability of exploitation activity being observed over the next 30 days (19th percentile)
CVSS score for CVE-2026-45671
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 High
Products affected by CVE-2026-45671
Open Webui 0.8.2
Open Webui 0.8.3
Open Webui 0.8.4
Open Webui 0.8.5
Open Webui 0.8.6
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-2026-45671 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 1,971 25.15%
DE 1,187 15.15%
CN 957 12.21%
FR 339 4.33%
SG 309 3.94%
RU 279 3.56%
GB 272 3.47%
KR 231 2.95%
NL 172 2.19%
JP 166 2.12%

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CVE-2026-45671 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 4,743 83.67%
Telecommunications 695 12.26%
Education 110 1.94%
Government/Politics 19 0.34%
Retail 18 0.32%
Utilities 16 0.28%
Business Services 13 0.23%
Engineering 12 0.21%
Media/Entertainment 11 0.19%
Consumer Goods 10 0.18%

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