GHSA-65pg-qhhw-mxwg

Опубликовано: 14 мая 2026

Источник: github

Github: Прошло ревью

CVSS3: 5.3

Описание

Open WebUI Vulnerable to Unauthenticated RAG Configuration Disclosure

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)

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.

Root Cause

backend/open_webui/routers/retrieval.py:262

@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, 'ENABLE_ASYNC_EMBEDDING': request.app.state.config.ENABLE_ASYNC_EMBEDDING, 'RAG_EMBEDDING_CONCURRENT_REQUESTS': request.app.state.config.RAG_EMBEDDING_CONCURRENT_REQUESTS, }

Compare with every adjacent endpoint on the same router:

@router.get('/embedding') async def get_embedding_config(request: Request, user=Depends(get_admin_user)): # ✅ @router.get('/config') async def get_rag_config(request: Request, user=Depends(get_admin_user)): # ✅

Proof Of Concept — No Token Required

curl -s http://TARGET/api/v1/retrieval/

{ "status": true, "CHUNK_SIZE": 1000, "CHUNK_OVERLAP": 100, "RAG_TEMPLATE": "### Task:\nRespond to the user query using the provided context...\n<context>\n{{CONTEXT}}\n</context>", "RAG_EMBEDDING_ENGINE": "", "RAG_EMBEDDING_MODEL": "sentence-transformers/all-MiniLM-L6-v2", "RAG_RERANKING_MODEL": "", "RAG_EMBEDDING_BATCH_SIZE": 1, "ENABLE_ASYNC_EMBEDDING": true, "RAG_EMBEDDING_CONCURRENT_REQUESTS": 0 }

Disclosed Information and Its Value to an Attacker

Field	What it reveals
`RAG_EMBEDDING_ENGINE`	Backend type (OpenAI, Ollama, Azure, etc.)
`RAG_EMBEDDING_MODEL`	Exact model name — reveals embedding model
`RAG_RERANKING_MODEL`	Reranker in use — reveals reranker
`RAG_TEMPLATE`	RAG template — exposes the RAG template
`CHUNK_SIZE` / `CHUNK_OVERLAP`	Chunking parameters — enables exact reconstruction of how documents are split and retrieved

Attack Scenario

Attacker sends one unauthenticated HTTP GET to /api/v1/retrieval/.
Response reveals the embedding model and chunking parameters.
Attacker uses the exact chunk size/overlap to craft RAG poisoning payloads that are guaranteed to be retrieved.

Impact

RAG template disclosure
Infrastructure fingerprinting — embedding engine and model name reveal the AI stack to an internet scanner
RAG attack surface mapping — chunk parameters enable precise calculation of retrieval boundaries
Zero-effort recon — no brute force, no credentials, no rate-limit concern. Single request from any IP.

Recommended Fix

Add get_verified_user dependency (or get_admin_user for stricter control):

# BEFORE (vulnerable) @router.get('/') async def get_status(request: Request): # AFTER @router.get('/') async def get_status(request: Request, user=Depends(get_verified_user)):

Ссылки

Пакеты

Наименование

open-webui

pip

Затронутые версииВерсия исправления

< 0.9.5

0.9.5

EPSS

Процентиль: 51%

0.0075

Низкий

5.3 Medium

CVSS3

CVE ID

CVE-2026-45397

Дефекты

CWE-306

Связанные уязвимости

CVE-2026-45397

CVSS3: 5.3

nvd

3 месяца назад

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.

BDU:2026-07224

CVSS3: 5.3

fstec

3 месяца назад

Уязвимость функции get_status() веб-интерфейса на базе искуственного интеллекта Open WebUI, позволяющая нарушителю обойти ограничения безопасности и получить несанкционированный доступ к защищаемой информации

EPSS

Процентиль: 51%

0.0075

Низкий

5.3 Medium

CVSS3

CVE ID

CVE-2026-45397

Дефекты

CWE-306