CVE-2026-39960 MantisBT is Vulnerable to Stored XSS through Custom Field Textarea Values

Mantis Bug Tracker MantisBT is an open source issue tracker. Versions 2.28.1 and below contain flawed logic that causes improper escaping of a textarea custom field's contents in the Update Issue page, bugupdatepage.php allowing an attacker to inject HTML and, if CSP settings permit, execute...