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Froxlor: API Authentication bypasses 2FA Authentication

Type: advisorySources: OSV

Froxlor is open source server administration software. Prior to 2.3.7, the API authentication path in lib/Froxlor/Api/FroxlorRPC.php and FroxlorRPC::validateAuth accepts an API key and secret for an administrator or customer account without checking type_2fa, validating a TOTP code, or invoking FroxlorTwoFactorAuth. The web interface requires a second factor for accounts with two-factor authentication enabled, but the API grants access after validating only the API credentials, expiration, API permission, and account status. An attacker who obtains an API key and secret for a protected account can call the available API functions without supplying the configured second factor, which can expose or modify customer data, domains, email and FTP accounts, databases, DNS records, and certificate material. This issue is fixed in version 2.3.7.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-52793
Confirmed fixed CVEs
Not specified
Updated in this feed
2 Nov 2026, 19:26 UTC · Revision 1

Source evidence

Froxlor: API Authentication bypasses 2FA Authentication

core-osv · Original source

Published 18 Aug 2026, 20:09 UTC

Froxlor is open source server administration software. Prior to 2.3.7, the API authentication path in lib/Froxlor/Api/FroxlorRPC.php and FroxlorRPC::validateAuth accepts an API key and secret for an administrator or customer account without checking type_2fa, validating a TOTP code, or invoking FroxlorTwoFactorAuth. The web interface requires a second factor for accounts with two-factor authentication enabled, but the API grants access after validating only the API credentials, expiration, API permission, and account status. An attacker who obtains an API key and secret for a protected account can call the available API functions without supplying the configured second factor, which can expose or modify customer data, domains, email and FTP accounts, databases, DNS records, and certificate material. This issue is fixed in version 2.3.7.

osv:CVE-2026-52793
Complete source record
{
  "id": "c9696ab76d3492edba429900f3e2cc33db2012790182dab73f2153342b07b695",
  "url": "https://osv.dev/vulnerability/CVE-2026-52793",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Froxlor: API Authentication bypasses 2FA Authentication",
    "summary": "Froxlor is open source server administration software. Prior to 2.3.7, the API authentication path in lib/Froxlor/Api/FroxlorRPC.php and FroxlorRPC::validateAuth accepts an API key and secret for an administrator or customer account without checking type_2fa, validating a TOTP code, or invoking FroxlorTwoFactorAuth. The web interface requires a second factor for accounts with two-factor authentication enabled, but the API grants access after validating only the API credentials, expiration, API permission, and account status. An attacker who obtains an API key and secret for a protected account can call the available API functions without supplying the configured second factor, which can expose or modify customer data, domains, email and FTP accounts, databases, DNS records, and certificate material. This issue is fixed in version 2.3.7.",
    "evidence": "osv:CVE-2026-52793",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-52793",
      "aliases": [
        "CVE-2026-52793",
        "GHSA-f9rx-7wf7-jr36"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/froxlor/froxlor",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "070e537744f20d30743a22e82f783e81893d7e54"
                },
                {
                  "fixed": "7fc21dc6f8d22673e4ddc765b710c9d3f85cb001"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.3.7"
                      }
                    ],
                    "source": "DESCRIPTION"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7fc21dc6f8d22673e4ddc765b710c9d3f85cb001"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "070e537744f20d30743a22e82f783e81893d7e54"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "2.3.7"
                  }
                ]
              }
            }
          ],
          "versions": [
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            "2.3.5",
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52793.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.635445640Z",
      "provider": "osv",
      "references": [
        "https://github.com/froxlor/froxlor/releases/tag/2.3.7",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52793.json",
        "https://github.com/froxlor/froxlor/security/advisories/GHSA-f9rx-7wf7-jr36",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-52793",
        "https://github.com/froxlor/froxlor/commit/7fc21dc6f8d22673e4ddc765b710c9d3f85cb001"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-287"
        ],
        "cna_assigner": "GitHub_M",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": ".3.7"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52793.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-52793",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489140,
  "published_at": "2026-08-18T20:09:33.33+00:00"
}