Auth bypass in Open-webui
CVE-2026-70481
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.5.0 until 0.11.0, the standard channel message update and delete handlers accepted any caller holding write access on the channel without checking…
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
Affected products
- Open-webui — versions >= 0.5.0, < 0.11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-70481?
- CVE-2026-70481 is a medium-severity vulnerability in Open-webui, classified under Improper Access Control. CVSS score: 5.4/10. Published 2026-08-04.
- How severe is CVE-2026-70481?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2026-70481 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.