CVE-2026-61736 PoC — LightRAG: CORS Wildcard + Credentials Enables Any-Origin Credentialed Requests

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-61736.yaml

Associated Vulnerability

Title: LightRAG: CORS Wildcard + Credentials Enables Any-Origin Credentialed Requests (CVE-2026-61736)
Description:LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.4, the server defaults to CORS_ORIGINS=* combined with allow_credentials=True in lightrag/api/lightrag_server.py, causing Starlette CORSMiddleware to effectively whitelist every origin for credentialed cross-origin requests. Any malicious website visited by an authenticated LightRAG user can silently make authenticated API requests, exfiltrating documents and knowledge graph data or performing destructive actions such as deleting the document store. This vulnerability is fixed in 1.5.4.

Description

LightRAG <= 1.5.4 contains a broken access control vulnerability caused by default CORS_ORIGINS=* with allow_credentials=True in lightrag_server.py, letting malicious websites perform authenticated API requests, exploit requires authenticated user.

File Snapshot

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