CVE-2026-61736

critical

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.

References

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

Details

Source: Mitre, NVD

Published: 2026-07-15

Updated: 2026-07-15

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Severity: Critical

EPSS

EPSS: 0.00305