CVE-2026-56399

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (3)

Core 3
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-82r6-c5jm-f3mw)
https://github.com/open-webui/open-webui/security/advisories/GHSA-82r6-c5jm-f3mw
Third Party Advisory third-party-advisory
VulnCheck Advisory: Open WebUI - Server-Side Request Forgery via Location Redirect in /api/v1/retrieval/process/web
https://www.vulncheck.com/advisories/open-webui-server-side-request-forgery-via-location-redirect-in-api-v1-retrieval-process-web

Scores

CVSS v3 5.0
EPSS 0.0032
EPSS Percentile 23.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (2)
open-webui/open-webui < 0.6.27
open-webui/open-webui 0.6.27
Published Jun 30, 2026
Tracked Since Jul 01, 2026