# CVE-2026-87013

## Summary

- **CVE ID:** CVE-2026-87013
- **Severity:** MEDIUM
- **CVSS Score:** 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
- **CWE:** CWE-835
- **Published:** Sep 9, 2026
- **Last Modified:** Sep 9, 2026

## Description

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 Products

- open-webui — open-webui (>= 0.10.0, < 0.11.1)

## References

- [CNA](https://github.com/open-webui/open-webui/security/advisories/GHSA-8r35-5x5r-hv74)
- [CNA](https://github.com/open-webui/open-webui/pull/28748)
- [CNA](https://github.com/open-webui/open-webui/commit/23b3a69bc26839bfa74edd1be6bfa2568ae902f4)
- [CNA](https://github.com/open-webui/open-webui/releases/tag/v0.11.1)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._