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

CVSS 3.1 9.1 CRITICALCheck source for fixed versionsKEV status unknown

cve-program · CVE-2026-85734

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-85734

Published

LightRAG

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "HKUDS",
                    "product": "LightRAG",
                    "versions": [
                        {
                            "version": "< 1.5.5",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

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Sources read 12 Nov 23:52 UTC · 273 of 275 readable · 271 fully read · documentation 469/469 current