CVE-2026-56399

Open WebUI - Server-Side Request Forgery via Location Redirect in /api/v1/retrieval/process/web

CVSS 5.3 MEDIUMEPSS 0.3%CWE-918

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

30 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

open-webui · open-webui

References

https://github.com/open-webui/open-webui/commit/02238d3113e966c353fce18f1b65117380896774 https://github.com/open-webui/open-webui/security/advisories/GHSA-82r6-c5jm-f3mw https://www.vulncheck.com/advisories/open-webui-server-side-request-forgery-via-location-redirect-in-api-v1-retrieval-process-web