Improper Authentication in Zammad - #VU153865
Published: October 7, 2026
Vulnerability identifier: #VU153865
CSH Severity: High
CVSS v4: 9.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error when processing authentication requests within the email verification flow. A remote attacker can bypass authentication process and gain unauthorized access to the application.
Affected software
Zammad
Remediation
Install updates from vendor's website.
Zammad - update to 7.2.1