CVE-2026-13229 Zammad 7.0.1 - Improper authorization in ticket article attachment cloning

Zammad 7.1.0 contains an authenticated improper authorization vulnerability in the ticket article attachment cloning endpoint...

CVE-2026-13229: Missing Authorization

Zammad 7.1.0 contains an authenticated improper authorization vulnerability in the ticket article attachment cloning endpoint...

CVE-2026-48946: Unrestricted Upload of File with Dangerous Type

The K2 frontend article-attachment upload path accepts files whose extension is .php, and Apache's standard modphp matches .php$ and executes them under the K2 web user. A K2 Author can upload a shell.php, then fetch /media/k2/attachments/shell.php and execute arbitrary PHP code in the web...

CVE-2021-42092

An issue was discovered in Zammad before 4.1.1. Stored XSS may occur via an Article during addition of an attachment to a Ticket...