Vulnerability in Open-Webui
CVE-2026-87013
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (40.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Open-Webui — versions >= 0.10.0, < 0.11.1
- Openwebui Open Webui
Weakness classification (CWE)
References
- github.com/open-webui/open-webui/commit/23b3a69bc26839bfa74edd1be6bfa2568ae902f4 (Patch)
- github.com/open-webui/open-webui/pull/28748 (Patch, Issue Tracking)
- github.com/open-webui/open-webui/releases/tag/v0.11.1 (Release Notes)
- github.com/open-webui/open-webui/security/advisories/GHSA-8r35-5x5r-hv74 (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-87013?
- CVE-2026-87013 is a medium-severity vulnerability in Open-Webui, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 4.3/10. Published 2026-09-09.
- How severe is CVE-2026-87013?
- Medium severity. CVSS v3 base score is 4.3 out of 10.