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.
History

Sat, 26 Sep 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Zammad
Zammad zammad
Vendors & Products Zammad
Zammad zammad

Fri, 25 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 25 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Zammad: Missing rate limiting allows password brute-forcing during two-factor login
Weaknesses CWE-203
CWE-307
CWE-799
References
Metrics cvssV4_0

{'score': 6.9, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-09-25T18:21:20.015Z

Updated: 2026-09-25T18:41:14.822Z

Reserved: 2026-09-01T20:05:09.424Z

Link: CVE-2026-84461

cve-icon Vulnrichment

Updated: 2026-09-25T18:41:11.529Z

cve-icon NVD

Status : Deferred

Published: 2026-09-25T19:17:57.467

Modified: 2026-09-28T14:45:39.697

Link: CVE-2026-84461

cve-icon Redhat

No data.