SB2026051160 - Improper Authorization in Open WebUI
Published: May 11, 2026
Security Bulletin ID
SB2026051160
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Authorization (CVE-ID: N/A)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to modify another user's private model.
The vulnerability exists due to improper authorization in the model update function when handling POST requests to the model update endpoint. A remote user can send a crafted update request for another user's model to modify another user's private model.
By changing access permissions during editing, unauthorized access can be gained.
Remediation
Install update from vendor's website.