Server-Side Request Forgery (SSRF) in Open WebUI - #VU146341
Published: August 31, 2026
Vulnerability identifier: #VU146341
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information from blocked or internal hosts via server-side requests.
The vulnerability exists due to server-side request forgery in the web retrieval fetch paths, built-in page fetch tool, and URL ingestion endpoint when following HTTP redirects during server-side URL fetching. A remote user can submit a URL that redirects to an excluded or internal destination to disclose sensitive information from blocked or internal hosts via server-side requests.
The issue is exposed only when redirect following is enabled through AIOHTTP_CLIENT_ALLOW_REDIRECTS, and it affects features that cause the server to fetch user-supplied URLs.
Affected software
Open WebUI
Remediation
Install security update from vendor's website.
Open WebUI - update to 0.11.1