FD - Half-click unauthenticated remote code execution on Horde Groupware IMP (from a stored XSS)
26 August 2026 at 16:46
Posted by Evan Tang on Aug 26
https://blog.evan.lat/posts/CVE-2026-65053/the blog talks about two vulns that are chainable together. for the sake of
brevity ill write up on the stored xss one.
in lib/Mime/Status.php, we see a pretty viable xss sink:
$out .= '<tr><td>' . $val . '</td></tr>';
xrefing this we see that most impls are sanitized with the exception of
lib/Mime/Viewer/Appledouble.php:
$data_name =...