Server-Side Request Forgery (SSRF) in Open WebUI - #VU130179
Published: May 5, 2026
Vulnerability identifier: #VU130179
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Open WebUI
Affected software:
Open WebUI
Open WebUI
Detailed vulnerability description
The vulnerability allows a remote user to access internal services and disclose sensitive information.
The vulnerability exists due to server-side request forgery (SSRF) in /api/v1/retrieval/process/web when processing user-supplied URLs that follow location redirects. A remote user can supply a crafted URL that redirects to an internal destination to access internal services and disclose sensitive information.
Direct internal fetches are blocked, but the protection can be bypassed through a redirect response.
Remediation
Install security update from vendor's website.