{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "7.1.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d51254f1c6da13f6ee27636a5c82e53f7e59666b"
            }
          ],
          "repo": "https://github.com/zammad/zammad",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-6vh5-pfp2-5rmh"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-203",
      "CWE-307",
      "CWE-799"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84461.json"
  },
  "details": "Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, the two-factor login step let an attacker try unlimited password guesses for any account without triggering Zammad's normal lockout or rate limiting. The response also revealed whether a guess was correct, even before two-factor authentication was checked. This made it possible to brute-force weak or reused passwords. This issue is fixed in version 7.1.2.",
  "id": "CVE-2026-84461",
  "modified": "2026-09-30T03:30:43.124715552Z",
  "published": "2026-09-25T18:21:20.015Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84461.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/zammad/zammad/security/advisories/GHSA-6vh5-pfp2-5rmh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84461"
    },
    {
      "type": "FIX",
      "url": "https://github.com/zammad/zammad/commit/d51254f1c6da13f6ee27636a5c82e53f7e59666b"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Zammad: Missing rate limiting allows password brute-forcing during two-factor login"
}