Infinite loop in Open WebUI - CVE-2026-87013
Published: September 28, 2026
Vulnerability identifier: #VU152700
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-87013
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to an infinite loop in the folder re-parent handler and folder subtree walk when processing a folder parent cycle. A remote user can re-parent a folder under itself and send a request that traverses the folder to cause a denial of service.
Folders must be enabled and the acting role must have the folders feature permission.
Affected software
Open WebUI
How to mitigate CVE-2026-87013
Install security update from vendor's website.
Open WebUI - update to 0.11.1