LightRAG: CORS Wildcard + Credentials Enables Any-Origin Credentialed Requests
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HKUDS | LightRAG | before 1.5.4 | 1.5.4 | Patch available | CNA |
| — | lightrag-hku (PyPI) | before 1.5.4 | 1.5.4 | Patch available | GHSA-6x6h-qqr7-855w |
- LightRAG VendorHKUDS Affected before 1.5.4 Fixed in 1.5.4 Patch available CNA
- lightrag-hku (PyPI) Vendor— Affected before 1.5.4 Fixed in 1.5.4 Patch available GHSA-6x6h-qqr7-855w
Remediation
- Fix · CNA LightRAG (HKUDS) Fixed in 1.5.4
- Fix · GHSA-6x6h-qqr7-855w lightrag-hku (PyPI) Fixed in 1.5.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-61736
- 2026-10-03 Alias added: GHSA-6x6h-qqr7-855w
References
Other 7
- https://github.com/HKUDS/LightRAG/security/advisories/GHSA-6x6h-qqr7-855w
- https://github.com/HKUDS/LightRAG/pull/3317
- https://github.com/HKUDS/LightRAG/commit/09567a4c983f580050db63569dd477122c058c3d
- https://github.com/HKUDS/LightRAG/commit/df68d75f9dc29dd340ffb6794b48f48c4fdc9a2d
- https://github.com/HKUDS/LightRAG/commit/ebba6548639c0f2e8919100eff76b401f1222252
- https://github.com/HKUDS/LightRAG/releases/tag/v1.5.4
- https://github.com/HKUDS/LightRAG
More HKUDS vulnerabilities
- TI-2026-44237 LightRAG: Missing Authentication for Critical API Functions in Default Configuration CVSS 3.1CRITICAL 9.8
- TI-2026-78721 Missing authentication in HKUDS Vibe-Trading FastAPI server enables RCE CVSS 4.0CRITICAL 9.3
- TI-2026-44184 Improper authentication in HKUDS LightRAG CVSS 4.0CRITICAL 9.3
- TI-2026-26034 Zero-Click Indirect Prompt Injection and Authentication Bypass via Email Polling CVSS 4.0HIGH 8.9
- TI-2026-62432 HKUDS nanobot before 0.3.0 Server-Side Request Forgery via WebFetchTool CVSS 4.0CRITICAL 9.2
- TI-2026-25310 DeepCode 1.2.0 Path Traversal via SPA Catch-All Route in main.py CVSS 4.0HIGH 8.7
Sources
- CVE-2026-61736 · CVE Program
- CVE-2026-61736 · NVD
- FIRST EPSS
- GHSA-6x6h-qqr7-855w · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences