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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-87013
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-09 21:17:06 UTC
Updated2026-09-10 16:18:04 UTC
DescriptionOpen 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

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

EPSS: 0.002680000 probability, percentile 0.188310000 (date 2026-09-10)

Problem Types: CWE-835 | CWE-835 CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Open-webui Open-webui affected >= 0.10.0, < 0.11.1 Not specified

References

ReferenceSourceLinkTags
github.com/open-webui/open-webui/pull/28748 [email protected] github.com
github.com/open-webui/open-webui/security/advisories/GHSA-8r35-5x5r-hv74 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/open-webui/open-webui/commit/23b3a69bc26839bfa74edd1be6bfa256... [email protected] github.com
github.com/open-webui/open-webui/releases/tag/v0.11.1 [email protected] github.com
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