CVE-2026-44554 — Open WebUI: Knowledge Base Destruction and RAG Poisoning via Unauthorized Collection Overwrite

CVE-2026-44554

Open WebUI: Knowledge Base Destruction and RAG Poisoning via Unauthorized Collection Overwrite PUBLISHED

Description (CNA)

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the POST /api/v1/retrieval/process/web endpoint accepts a user-supplied collection_name and an overwrite query parameter (default: True). It performs no authorization check on whether the calling user owns or has write access to the target collection. When overwrite=True, save_docs_to_vector_db calls VECTOR_DB_CLIENT.delete_collection() on the target collection before writing new content. This vulnerability is fixed in 0.9.0.

Affected (CNA)

Vendor / product	Versions
open-webui / open-webui	affected < 0.9.0

CWE

CWE-862

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-7r82-qhg4-6wvj

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.