{"id":"CVE-2026-84461","summary":"Zammad: Missing rate limiting allows password brute-forcing during two-factor login","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.","aliases":["GHSA-6vh5-pfp2-5rmh"],"modified":"2026-09-30T03:30:43.124715552Z","published":"2026-09-25T18:21:20.015Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84461.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-203","CWE-307","CWE-799"]},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/zammad/zammad","events":[{"introduced":"0"},{"fixed":"d51254f1c6da13f6ee27636a5c82e53f7e59666b"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"7.1.2"}]}}],"versions":["7.1.1","7.1.0","7.1.0-alpha","7.0.0-alpha","6.6.0-alpha","6.5.0-alpha","6.4.0-alpha","6.3.0-alpha","6.2.0-alpha","6.1.0-alpha","6.0.0-alpha","5.5.0-alpha","5.4.0-alpha","5.3.0-alpha","5.2.0-alpha","3.7.0","1.6.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84461.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","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"}]}