CVE-2026-87013 open-webui CVE debrief

Who should care

System administrators and users of Open WebUI versions 0.10.0 to 0.11.0 should verify and apply patches to prevent a denial of service. Affected operator, platform, vulnerability-management, and security-team impact should be reviewed. Compensating controls for exposed systems should be reviewed while remediation is scheduled and verified.

Why it matters

Authenticated users could exploit this vulnerability to cause a denial of service in Open WebUI versions 0.10.0 to 0.11.0 by creating a cycle in the folder tree structure.

• Denial of service through resource exhaustion
• Potential for data access disruption

Technical summary

The vulnerability allows an authenticated user to create a cycle in the folder tree structure of Open WebUI versions 0.10.0 to 0.11.0, potentially causing a denial of service through resource exhaustion and data access disruption. The issue is fixed in version 0.11.1. The vulnerability can be exploited by creating a cycle in the folder tree structure, which can be used to cause a denial of service. The affected versions are 0.10.0 to 0.11.0, and the issue is fixed in version 0.11.1. The vulnerability can be mitigated by verifying and applying patches, reviewing and restricting user permissions for folder updates, and monitoring for unusual folder structure changes.

Defensive priority

Medium priority for systems using Open WebUI versions 0.10.0 to 0.11.0; verify and apply patches.

Recommended defensive actions

• Verify Open WebUI version and apply patch to 0.11.1 if vulnerable
• Review and restrict user permissions for folder updates
• Monitor for unusual folder structure changes
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, affected versions, and fixed version. The vulnerability was reported by [email protected] and fixed in version 0.11.1. The issue allows an authenticated user to create a cycle in the folder tree structure, potentially causing a denial of service. The CVE record and NVD entry provide details on the vulnerability, affected versions, and fixed version.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.