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Vulnerability · Published Jul 15, 2026 · Assigned by GitHub_M

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

Critical 9.3

In plain English

A critical-severity security flaw in LightRAG from HKUDS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.3Critical
Exploit odds (30 days)1.4%top 27.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Nuclei

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
PyPIlightrag-hku1.5.4GHSA-6x6h-qqr7-855w
PyPIlightrag-hku1.5.4PYSEC-2026-3474

Affected products (as reported)

VendorProductVersions
HKUDS LightRAG < 1.5.4

Weakness: CWE-942 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

References