CVE-2026-56399
Medium
Description
Open WebUI before 0.6.27 contains a server-side request forgery vulnerability in the /api/v1/retrieval/process/web endpoint that allows authenticated users to bypass SSRF protections. Attackers can manipulate URL parameters with location redirect headers to access internal services and potentially execute commands via instance secrets.
SeverityMedium
CVSS5.0
Exploit probability—
ProductOpen-webui
PublishedJun 30, 2026
First seenJun 30, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- open-webui open-webui0.6.27 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| open-webui open-webui | v < 0.6.27 | 0.6.27 |
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