LightRAG: No Rate Limiting on /login Endpoint Allows Brute-Force Attacks (HKUDS LightRAG)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.61 % · percentile 49 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Deferred
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.
Weaknesses (CWE)
- CWE-307 — Improper Restriction of Excessive Authentication Attempts
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | GitHub_M |
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | NVD · security-advisories@github.com (Secondary) |
Advisories
- GHSA-frch-4w6v-q5xx — lightrag-hku: No Rate Limiting on /login Endpoint Allows Brute-Force Attacks
- PYSEC-2026-4062 — lightrag-hku: No Rate Limiting on /login Endpoint Allows Brute-Force Attacks
European references
- ENISA EUVD · EUVD-2026-84548
- GCVE · GCVE-0-2026-85734
Affected products
| Product | Versions |
|---|---|
| HKUDS · LightRAG | affected < 1.5.5 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |