CVE-2026-61736
CWE-942Published: July 15, 2026· Updated: Jul 15, 2026
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.
Risk Analysis
This critical vulnerability in LightRAG allows malicious websites to perform authenticated API requests on behalf of an authenticated user due to misconfigured Cross-Origin Resource Sharing (CORS) settings. With a CVSS score of 9.3, this flaw poses a significant risk for data exfiltration and destructive actions.
No public exploit is currently known for this vulnerability. However, its remote exploitability (AV:N) and low attack complexity (AC:L) indicate a potentially high impact if exploited.
Upgrade LightRAG to version 1.5.4 or later to address the CORS misconfiguration. Ensure proper CORS policies are implemented to restrict access to trusted origins.
Technical Analysis
CVE-2026-61736 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.3.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (7)
Quick Facts
Related CVEs (CWE-942)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-61736 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts