CVE-2026-84461
Zammad: Missing rate limiting allows password brute-forcing during two-factor login
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-203 CWE-307 CWE-799 |
| Vendor | zammad |
| Product | zammad |
| Published | Sep 25, 2026 |
| Last Updated | Sep 25, 2026 |
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Affected Versions
zammad / zammad
< 7.1.2