Vulnerability Description
LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, the POST /login endpoint in lightrag/api/lightrag_server.py does not impose a rate limit, account lockout, delay, or counter for failed authentication attempts. A network attacker can submit password guesses at full request speed until a valid account password is found. Successful credential recovery grants authenticated access to documents, the knowledge graph, and administrative operations. This issue is fixed in version 1.5.5.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/HKUDS/LightRAG/commit/135bc9056e9ecd800c1abe2f2ce24d1a86622a5
- https://github.com/HKUDS/LightRAG/pull/3424
- https://github.com/HKUDS/LightRAG/releases/tag/v1.5.5
- https://github.com/HKUDS/LightRAG/security/advisories/GHSA-frch-4w6v-q5xx
FAQ
What is CVE-2026-85734?
CVE-2026-85734 is a vulnerability with a CVSS score of 9.1 (CRITICAL). LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, the POST /login endpoint in lightrag/api/lightrag_server.py does not impose a rate limit, account lockout, delay, or c...
How severe is CVE-2026-85734?
CVE-2026-85734 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-85734?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.