CVE-2026-29070 — Open WebUI has unauthorized deletion of knowledge files

CVE-2026-29070

Open WebUI has unauthorized deletion of knowledge files PUBLISHED

Description (CNA)

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.6, an access control check is missing when deleting a file from a knowledge base. The only check being done is that the user has write access to the knowledge base (or is admin), but NOT that the file actually belongs to this knowledge base. It is thus possible to delete arbitrary files from arbitrary knowledge bases (as long as one knows the file id). Version 0.8.6 patches the issue.

Affected (CNA)

Vendor / product	Versions
open-webui / open-webui	affected < 0.8.6

CWE

CWE-862

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-26gm-93rw-cchf

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.