What is CVE-2026-70490?

CVE-2026-70490 is a medium-severity vulnerability in Open-webui, classified under Incorrect Authorization. CVSS score: 6.3/10. Published 2026-08-04.

How severe is CVE-2026-70490?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Auth bypass in Open-webui

CVE-2026-70490

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, the terminal WebSocket route in backend/open_webui/routers/terminals.py authenticated its own first-message JWT and never applie…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Open-webui — versions >= 0.8.8, < 0.11.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-70490?: CVE-2026-70490 is a medium-severity vulnerability in Open-webui, classified under Incorrect Authorization. CVSS score: 6.3/10. Published 2026-08-04.
How severe is CVE-2026-70490?: Medium severity. CVSS v3 base score is 6.3 out of 10.