A vulnerability was found in slackero phpwcms up to 1.9.45/1.10.8. It has been rated as critical. This issue affects the function file_get_contents/is_file of the file include/inc_lib/content/cnt21.readform.inc.php of the component Custom Source Tab. The manipulation of the argument cpage_custom leads to deserialization.

The identification of this vulnerability is CVE-2025-5498. The attack may be initiated remotely. Furthermore, there is an exploit available.

It is recommended to upgrade the affected component.