{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.5.5"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "22ea2d0cbfa2b7002aa118bd0bf1780a69d489bc"
            }
          ],
          "repo": "https://github.com/hkuds/lightrag",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-frch-4w6v-q5xx"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-307"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85734.json"
  },
  "details": "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.",
  "id": "CVE-2026-85734",
  "modified": "2026-09-23T03:31:01.472009361Z",
  "published": "2026-09-22T16:18:14.144Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85734.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/HKUDS/LightRAG/commit/135bc9056e9ecd800c1abe2f2ce24d1a86622a54"
    },
    {
      "type": "FIX",
      "url": "https://github.com/HKUDS/LightRAG/pull/3424"
    },
    {
      "type": "WEB",
      "url": "https://github.com/HKUDS/LightRAG/releases/tag/v1.5.5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/HKUDS/LightRAG/security/advisories/GHSA-frch-4w6v-q5xx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85734"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "LightRAG: No Rate Limiting on /login Endpoint Allows Brute-Force Attacks"
}