CVE-2026-88001CWE-918ssrf

CVE-2026-88001

Medium · published September 10, 2026

CVSS v3.1
5.0
EPSS
0%
Percentile
30.6
In the wild
Unconfirmed
What it is

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, server-side web fetches did not reapply WEB_FETCH_FILTER_LIST or private-address controls to HTTP redirect destinations when AIOHTTP_CLIENT_ALLOW_REDIRECTS was enabled. An authenticated user could redirect the aiohttp and requests fetch paths to excluded hosts, loopback, private networks, or cloud metadata services and route resulting content into web search, URL ingestion, page-fetch tools, or chat image processing. This issue is fixed in version 0.11.1.

The record
Technical detail
CVSS v3.1
5.0 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00378 · 30.6th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-10T02:18Z
Affected products (1)
ProductVersionsFixed in
openwebui/open_webui≥ 0.9.5, < 0.11.10.11.1
References (5)
https://github.com/open-webui/open-webui/commit/e3e4bd87df6fc629e7e22081d980d55a7632b8b7 · [email protected]https://github.com/open-webui/open-webui/pull/27823 · [email protected]https://github.com/open-webui/open-webui/releases/tag/v0.11.1 · [email protected]https://github.com/open-webui/open-webui/security/advisories/GHSA-5x7x-4c3c-qf5w · [email protected]https://github.com/open-webui/open-webui/security/advisories/GHSA-5x7x-4c3c-qf5w · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 11 SEP 03:19Z
    EPSS moved — → 0%
    epss
  • 09 SEP 21:38Z
    Open WebUI: Server-side fetches reach blocked and internal hosts via unvalidated HTTP redirect targets
    cvelistv5