High severity · published Apr 1, 2026
CVE-2026-34222
Open WebUI has Broken Access Control in Tool Valves
7.7
CVSS
5%
EPSS
No
On KEV
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.11, there is a broken access control vulnerability in tool values. This issue has been patched in version 0.8.11.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)5.0% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
open-webui · open-webui
< 0.8.11 · source: vendor
OW
Open Webui · Openwebui
before 0.8.11 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34222
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34222
Release Notes
https://github.com/open-webui/open-webui/releases/tag/v0.8.11
Vendor Advisory
https://github.com/open-webui/open-webui/security/advisories/GHSA-7429-hxcv-268m
Exploit
http://seclists.org/fulldisclosure/2026/Apr/4
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