Auth bypass in Open-webui
CVE-2026-70488
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the sync cleanup endpoint authorized write access to the knowledge base in the URL but then acted on directory and file ids supp…
Vulnerability class: IDOR (Insecure Direct Object Reference)
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Open-webui — versions >= 0.9.6, < 0.11.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-70488?
- CVE-2026-70488 is a medium-severity vulnerability in Open-webui, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-08-04.
- How severe is CVE-2026-70488?
- Medium severity. CVSS v3 base score is 4.3 out of 10.