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CVE-2026-45338

⚠️ high
🔍 Scan for this CVE
Summary

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a Server-Side Request Forgery (SSRF) vulnerability exists in _process_picture_url() in backend/open_webui/utils/oauth.py (line ~1338). The function fetches arbitrary URLs from OAuth picture claims without applying validate_url(), allowing an attacker to force the server to make HTTP requests to internal resources and exfiltrate the full response. This vulnerability is fixed in 0.9.0

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a Server-Side Request Forgery (SSRF) vulnerability exists in _process_picture_url() in backend/open_webui/utils/oauth.py (line ~1338). The function fetches arbitrary URLs from OAuth picture claims without applying validate_url(), allowing an attacker to force the server to make HTTP requests to internal resources and exfiltrate the full response. This vulnerability is fixed in 0.9.0.

CVSS Score
7.7
High
EPSS Score
0.0
Exploit Probability
Published Date
2026-05-15
First Seen: 2026-05-17
📊 Relative Risk Intelligence

This CVE is Moderate Risk - more severe than 69.6% of all 328,009 vulnerabilities in our database.

#99,625
Above average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: May 15, 2026
🔍 Exploitation Status
Poc
Proof-of-concept available
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
SSVC data provided by CISA
Last Modified 2026-05-18
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CWE IDs (Weakness Types)
CWE-918

📦 Affected Products 1

Vendor Product Status Affected Versions
openwebui open_webui Affected
< 0.9.0

🔗 References 1

https://github.com/open-webui/open-webui/security/ad...
Exploit Mitigation Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-44550 🔶 medium 5.0 0.0 Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, Folde... 2026-05-15
CVE-2026-44551 ⛔ critical 9.1 0.0 Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the L... 2026-05-15
CVE-2026-44552 ⚠️ high 8.7 0.0 Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the t... 2026-05-15
CVE-2026-44553 ⚠️ high 8.1 0.0 Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, admin... 2026-05-15
CVE-2026-44554 ⚠️ high 8.1 0.0 Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the P... 2026-05-15
CVE-2026-44555 ⚠️ high 7.6 0.1 Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, Open ... 2026-05-15
These CVEs affect the same products