CVE-2026-87013

Open WebUI: Any authenticated user can start a non-terminating request via a folder parent cycle

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.

Affected

open-webui

CVSS v3.1 GITHUB

4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS

0.48% chance of exploitation in the next 30 days, 40th percentile

Published

2026-09-09

Updated

2026-09-10

Proof-of-concept exploits (1)

• advisories/GHSA-8r35-5x5r-hv74

Security advisories

• open-webui/open-webui/security/advisories/GHSA-8r35-5x5r-hv74
• open-webui/open-webui/pull/28748

References

• CVE Record
• NVD entry