{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.0.0"
                  },
                  {
                    "fixed": "4.3.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "fixed": "26f292515fe623826070454872f9cee08b756544"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "5af036079de201e966882368f00cf8e1da91f3aa"
            },
            {
              "fixed": "3288ce48034ded2a31be03805b607e8f708416df"
            },
            {
              "fixed": "26f292515fe623826070454872f9cee08b756544"
            }
          ],
          "repo": "https://github.com/padloc/padloc",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3mq5-m2qg-fqhq"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-307"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126571.json"
  },
  "details": "Padloc 4.0.0 before 4.3.1 contains an authentication bypass vulnerability in the legacy retrieveMFAToken handler that never counts wrong email verification codes toward the attempt limit. Unauthenticated attackers knowing a victim's email can brute force the 6-digit code to obtain verification tokens usable in signup, login and account recovery flows.",
  "id": "CVE-2026-126571",
  "modified": "2026-11-12T02:30:35.100797287Z",
  "published": "2026-11-11T02:36:06.963Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126571.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/padloc/padloc/security/advisories/GHSA-3mq5-m2qg-fqhq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126571"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/padloc-4.0.0-before-4.3.1-email-mfa-code-brute-force-via-retrievemfatoken"
    },
    {
      "type": "FIX",
      "url": "https://github.com/padloc/padloc/commit/26f292515fe623826070454872f9cee08b756544"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/padloc/padloc"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/padloc/padloc/blob/v4.3.0/packages/core/src/v3-compat.ts#L191-L210"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Padloc 4.0.0 before 4.3.1 Email MFA Code Brute Force via retrieveMFAToken"
}