CVE-2026-85734
CRITICAL
CVSS 9.1
Published: 2026-09-22
Modified: 2026-09-22
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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.
Quick Facts
| CVE ID | CVE-2026-85734 |
| CVSS Score | 9.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| Published | 2026-09-22 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |