Incorrect default permissions in Zammad - CVE-2026-102490
Published: October 2, 2026
Vulnerability identifier: #VU153199
CSH Severity: High
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-102490
CWE-ID: CWE-276
Exploitation vector: Local access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect default permissions for files and folders that are set by the application. A local user with access to the system can gain root privileges.
Note, the vulnerability is being actively exploited in the wild.
Affected software
Zammad
How to mitigate CVE-2026-102490
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.