What is CVE-2026-109572?

CVE-2026-109572 is a high-severity vulnerability in Open-Webui, classified under Missing Authorization. CVSS score: 7.6/10. Published 2026-10-12.

How severe is CVE-2026-109572?

High severity. CVSS v3 base score is 7.6 out of 10.

Auth bypass in Open-Webui

CVE-2026-109572

Open WebUI from 0.8.6 before 0.11.4 contains a privilege escalation vulnerability in the terminal proxy that allows authenticated users to reach the Terminals administrator API with the shared key attached. Attackers can send requests through /api/v1/terminals/{server_id}/{path} to list or stop other users' terminals and modify terminal policies, injecting environment variables into other users' terminals.

Vulnerability class: Broken Access Control

Published 2026-10-12 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Open-Webui

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

github.com/open-webui/open-webui/security/advisories/GHSA-q46m-r89w-j74p (vendor-advisory)
github.com/open-webui/open-webui/commit/51bb8cb142f72503e861eeee25ae4dc73c26c36b (patch)
www.vulncheck.com/advisories/open-webui-0.8.6-before-0.11.4-privilege-escalatio… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109572?: CVE-2026-109572 is a high-severity vulnerability in Open-Webui, classified under Missing Authorization. CVSS score: 7.6/10. Published 2026-10-12.
How severe is CVE-2026-109572?: High severity. CVSS v3 base score is 7.6 out of 10.