CVE-2026-84461

Summary

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.

Affected Software

VendorProductVersion RangeStatus
zammadzammad< 7.1.2affected

Weaknesses

  • CWE-203: CWE-203: Observable Discrepancy
  • CWE-307: CWE-307: Improper Restriction of Excessive Authentication Attempts
  • CWE-799: CWE-799: Improper Control of Interaction Frequency

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References