Auth bypass in Open-webui

CVE-2026-70483

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, DELETE /api/v1/chats/{id} cancelled a chat's in-flight tasks before checking whether the caller could delete that chat. Any auth…

Vulnerability class: Broken Access Control

CVSS v3 metric

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

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-70483?
CVE-2026-70483 is a low-severity vulnerability in Open-webui, classified under Missing Authorization. CVSS score: 3.1/10. Published 2026-08-04.
How severe is CVE-2026-70483?
Low severity. CVSS v3 base score is 3.1 out of 10.