CVE-2026-29070: Open WebUI unauthorized deletion of knowledge files

# CVE-2026-29070: Open WebUI unauthorized deletion of knowledge files

https://gcdradar.vercel.app/incidents/cve-2026-29070-open-webui-unauthorized-deletion-of-knowledge · AIR-2026-0532 · closed 2026-03-27

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-03-27
- AI role: Attack on AI
- Products: Open WebUI
- CVE ids: CVE-2026-29070
- CVSS: 5.4

## Summary

Open WebUI lacks proper validation when deleting files from knowledge bases, allowing users to delete arbitrary files if the file ID is known. Vendors recommend updating to patched versions.

## What to do

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

## Latest updates

- 2026-03-27: CVE-2026-29070: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. (https://nvd.nist.gov/vuln/detail/CVE-2026-29070)
- 2026-03-27: CVE-2026-29070: Open WebUI has unauthorized deletion of knowledge files (https://github.com/advisories/GHSA-26gm-93rw-cchf)

## Sources

- 2026-03-27 GitHub Advisory Database: CVE-2026-29070: Open WebUI has unauthorized deletion of knowledge files https://github.com/advisories/GHSA-26gm-93rw-cchf
- 2026-03-27 NVD: CVE-2026-29070: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. https://nvd.nist.gov/vuln/detail/CVE-2026-29070

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