What is CVE-2026-70487?

CVE-2026-70487 is a medium-severity vulnerability in Open-webui, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-08-04.

How severe is CVE-2026-70487?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Open-webui

CVE-2026-70487

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, inline direct model metadata accepted client-supplied knowledge attachments without filtering them against the caller's read acc…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Open-webui — versions >= 0.8.8, < 0.11.0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-70487?: CVE-2026-70487 is a medium-severity vulnerability in Open-webui, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-08-04.
How severe is CVE-2026-70487?: Medium severity. CVSS v3 base score is 5.3 out of 10.