CVE-2026-45397 — Open WebUI: Unauthenticated RAG Configuration Disclosure

Affected: open-webui

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, GET /api/v1/retrieval/ returns live RAG pipeline configuration to any unauthenticated HTTP client. No Authorization header, cookie, or API key is required. Every adjacent endpoint on the same router (/embedding, /config) is correctly guarded by get_admin_user making this a targeted omission. This vulnerability is fixed in 0.9.5.

GHSA-65pg-qhhw-mxwg — Open WebUI Vulnerable to Unauthenticated RAG Configuration Disclosure

Affected: PyPI: open-webui

**Vulnerability Type:** Information Disclosure / Missing Authentication **Severity:** Medium **Component:** `backend/open_webui/routers/retrieval.py` — `get_status()` (`GET /`) **Affected Endpoint:** `GET /api/v1/retrieval/` **Affected Version:** Open WebUI `main` branch — confirmed unpatched through **v0.9.2** **Authentication Required:** None — internet-facing with zero credentials **CVSSv3.1 Score:** 5.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

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## Summary

`GET /api/v1/retrieval/` returns live RAG pipeline configuration to any unauthenticated HTTP client. No `Authorization` header, cookie, or API key is required. Every adjacent endpoint on the same router (`/embedding`, `/config`) is correctly guarded by `get_admin_user` making this a targeted omission.

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## Root Cause

`backend/open_webui/routers/retrieval.py:262`

```python @router.get('/') async def get_status(request: Request): # ← no Depends(get_verified_user) return { 'status': True, 'CHUNK_SIZE': request.app.state.config.CHUNK_SIZE, 'CHUNK_OVERLAP': request.app.state.config.CHUNK_OVERLAP, 'RAG_TEMPLATE': request.app.state.config.RAG_TEMPLATE, 'RAG_EMBEDDING_ENGINE': request.app.state.config.RAG_EMBEDDING_ENGINE, 'RAG_EMBEDDING_MODEL': request.app.state.config.RAG_EMBEDDING_MODEL, 'RAG_RERANKING_MODEL': request.app.state.config.RAG_RERANKING_MODEL, 'RAG_EMBEDDING_BATCH_SIZE': request.app.state.config.RAG_EMBEDDING_BATCH_SIZE,…

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CVE-2026-45397 — Open WebUI: Unauthenticated RAG Configuration Disclosure

GHSA-65pg-qhhw-mxwg — Open WebUI Vulnerable to Unauthenticated RAG Configuration Disclosure