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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2026-85734

LightRAG: No Rate Limiting on /login Endpoint Allows Brute-Force Attacks

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

HKUDS LightRAG

  • < 1.5.5affected

References