Cross-site scripting (XSS) vulnerability in bug_actiongroup_page.php in Mantis 0.19.0a1 through 1.0.0a3 allows remote attackers to inject arbitrary web script or HTML via the summary of the bug, which is not quoted when view_all_bug_page.php is used to delete the bug, as identified by bug#0006002, a different vulnerability than CVE-2005-2557.