Nginx Proxy Manager through 2.16.0 Missing Brute-Force Protection

{
  "id": "7fa57e71645d6e23799b4bf59410307edd6b586bb9b46c816a5d9c8d29da6453",
  "url": "https://osv.dev/vulnerability/CVE-2026-102334",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nginx Proxy Manager through 2.16.0 Missing Brute-Force Protection",
    "summary": "Nginx Proxy Manager through 2.16.0 lacks rate-limiting on authentication endpoints, allowing unauthenticated attackers to make unlimited password guesses against any account. Attackers can brute-force login credentials via POST /api/tokens and subsequently guess TOTP codes via POST /api/tokens/2fa to gain full session access and administrative control.",
    "evidence": "osv:CVE-2026-102334",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-102334",
      "aliases": [
        "CVE-2026-102334"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nginxproxymanager/nginx-proxy-manager",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "a29eae9dc271ceabda51a6197bf1790644c99202"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.16.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.16.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.16.0",
            "v2.15.1",
            "v2.15.0",
            "v2.14.0",
            "v2.13.7",
            "v2.13.6",
            "v2.13.5",
            "v2.13.4",
            "v2.13.3",
            "v2.13.2",
            "v2.13.1",
            "v2.13.0",
            "v2.12.6",
            "v2.12.5",
            "v2.12.4",
            "v2.12.3",
            "v2.12.2",
            "v2.12.1",
            "v2.12.0",
            "v2.11.3",
            "v2.11.2",
            "v2.11.1",
            "v2.11.0",
            "v2.10.4",
            "v2.10.3",
            "v2.10.2",
            "v2.10.1",
            "v2.10.0",
            "v2.9.22",
            "v2.9.21",
            "v2.9.20",
            "v2.9.19",
            "v2.9.18",
            "v2.9.17",
            "v2.9.16",
            "v2.9.15",
            "v2.9.14",
            "v2.9.13",
            "v2.9.12",
            "v2.9.11",
            "v2.9.10",
            "v2.9.9",
            "v2.9.8",
            "v2.9.3",
            "v2.9.0",
            "v2.8.1",
            "v2.8.0",
            "v2.7.3",
            "v2.7.2",
            "v2.7.1",
            "v2.7.0",
            "v2.6.2",
            "v2.6.1",
            "v2.6.0",
            "v2.5.0",
            "v2.4.0",
            "v2.3.1",
            "v2.3.0",
            "v2.2.4",
            "v2.2.3",
            "v2.2.2",
            "v2.2.1",
            "v2.2.0",
            "v2.1.2",
            "v2.1.1",
            "v2.1.0",
            "2.0.14",
            "2.0.13",
            "2.0.12",
            "2.0.11",
            "2.0.10",
            "2.0.9",
            "2.0.8",
            "2.0.7",
            "2.0.6",
            "2.0.5",
            "2.0.4",
            "2.0.3",
            "2.0.2",
            "1.1.2",
            "1.1.1",
            "1.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102334.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.473614414Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102334.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-102334",
        "https://www.vulncheck.com/advisories/nginx-proxy-manager-through-2.16.0-missing-brute-force-protection",
        "https://github.com/NginxProxyManager/nginx-proxy-manager/pull/5908",
        "https://github.com/NginxProxyManager/nginx-proxy-manager",
        "https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/app.js#L15-L58",
        "https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/2fa.js#L196-L240",
        "https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/token.js#L154-L182"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-307"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102334.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-102334",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 513246,
  "published_at": "2026-09-28T22:21:41.072+00:00"
}