PYSEC-2026-2710 Open WebUI has Knowledge Base Destruction and RAG Poisoning via Unauthorized Collection Overwrite

Knowledge Base Destruction and RAG Poisoning via Unauthorized Collection Overwrite Affected Component Retrieval web/YouTube processing endpoints: - backend/openwebui/routers/retrieval.py lines 1810-1837, processweb - backend/openwebui/routers/retrieval.py the parallel processyoutube endpoint -...

CVE-2026-44554

Open WebUI (self-hosted AI) vulnerability: the POST /api/v1/retrieval/process/web endpoint accepts a user-controlled collection_name with overwrite defaulting to True, and performs no authorization check to verify write access. When overwrite is True, save_docs_to_vector_db calls VECTOR_DB_CLIENT...

GHSA-7R82-QHG4-6WVJ Open WebUI has Knowledge Base Destruction and RAG Poisoning via Unauthorized Collection Overwrite

Knowledge Base Destruction and RAG Poisoning via Unauthorized Collection Overwrite Affected Component Retrieval web/YouTube processing endpoints: - backend/openwebui/routers/retrieval.py lines 1810-1837, processweb - backend/openwebui/routers/retrieval.py the parallel processyoutube endpoint -...

PT-2026-39271

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.0 Description The 'POST /api/v1/retrieval/process/web' endpoint accepts a user-supplied collection name and an overwrite query parameter, which defaults to True. The system fails to perform authorization checks...