CVE-2026-54016: Open WebUI knowledge base file enumeration BOLA

# CVE-2026-54016: Open WebUI knowledge base file enumeration BOLA

https://gcdradar.vercel.app/incidents/cve-2026-54016-open-webui-knowledge-base-file-enumeration-bo · AIR-2026-0777 · closed 2026-06-17

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-06-17
- AI role: Attack on AI
- Products: Open WebUI
- CVE ids: CVE-2026-54016
- CVSS: 4.3

## Summary

A broken object level authorization vulnerability in Open WebUI permits authenticated users to query arbitrary knowledge base IDs. This allows unauthorized enumeration of private file metadata without proper read checks.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-06-23: CVE-2026-54016: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. (https://nvd.nist.gov/vuln/detail/CVE-2026-54016)
- 2026-06-17: CVE-2026-54016: Open WebUI BOLA: `search_knowledge_files` Allows Unauthorized Knowledge Base File Enumeration (https://github.com/advisories/GHSA-cx9v-4qj2-jrw6)

## Sources

- 2026-06-17 GitHub Advisory Database: CVE-2026-54016: Open WebUI BOLA: `search_knowledge_files` Allows Unauthorized Knowledge Base File Enumeration https://github.com/advisories/GHSA-cx9v-4qj2-jrw6
- 2026-06-23 NVD: CVE-2026-54016: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. https://nvd.nist.gov/vuln/detail/CVE-2026-54016

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.