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.
https://github.com/HKUDS/LightRAG/security/advisories/GHSA-6x6h-qqr7-855w
https://github.com/HKUDS/LightRAG/releases/tag/v1.5.4
https://github.com/HKUDS/LightRAG/pull/3317
https://github.com/HKUDS/LightRAG/commit/ebba6548639c0f2e8919100eff76b401f1222252
https://github.com/HKUDS/LightRAG/commit/df68d75f9dc29dd340ffb6794b48f48c4fdc9a2d
https://github.com/HKUDS/LightRAG/commit/09567a4c983f580050db63569dd477122c058c3d