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

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Summary

CVECVE-2026-61736
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-15 15:16:48 UTC
Updated2026-07-15 18:15:13 UTC
DescriptionLightRAG 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.

Risk And Classification

Primary CVSS: v3.1 9.3 CRITICAL from [email protected]

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

Problem Types: CWE-942 | CWE-942 CWE-942: Permissive Cross-domain Policy with Untrusted Domains

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.3CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
3.1CNADECLARED9.3CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA HKUDS LightRAG affected < 1.5.4 Not specified

References

ReferenceSourceLinkTags
github.com/HKUDS/LightRAG/commit/09567a4c983f580050db63569dd477122c058c3d [email protected] github.com
github.com/HKUDS/LightRAG/releases/tag/v1.5.4 [email protected] github.com
github.com/HKUDS/LightRAG/commit/ebba6548639c0f2e8919100eff76b401f1222252 [email protected] github.com
github.com/HKUDS/LightRAG/commit/df68d75f9dc29dd340ffb6794b48f48c4fdc9a2d [email protected] github.com
github.com/HKUDS/LightRAG/security/advisories/GHSA-6x6h-qqr7-855w 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/HKUDS/LightRAG/pull/3317 [email protected] github.com
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