Open WebUI up to 0.11.0 Folder Tree Walking /api/v1/folders resource consumption

Summaryinfo

A vulnerability labeled as problematic has been found in Open WebUI up to 0.11.0. This impacts an unknown function of the file /api/v1/folders of the component Folder Tree Walking. Such manipulation leads to resource consumption. This vulnerability is traded as CVE-2026-87013. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Open WebUI up to 0.11.0. It has been rated as problematic. Affected by this issue is an unknown part of the file /api/v1/folders of the component Folder Tree Walking. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, POST /api/v1/folders/{id}/update/parent allowed a user to place a folder under itself or one of its descendants, while the folder tree walks used by DELETE /api/v1/folders/{id} and POST /api/v1/folders/{id}/read did not track visited folder identifiers. An authenticated user could persist a parent cycle and start a request that consumed CPU and memory indefinitely, with the condition remaining stored until repaired. This issue is fixed in version 0.11.1.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-87013 since 09/08/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 0.11.1 eliminates this vulnerability.

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Productinfo

Name

• Open WebUI

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11.0

CPE 2.3info

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CPE 2.2info

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