CVE-2026-18645 danpros HTMLy Admin Content Endpoint admin.php add_content path traversal

A security flaw has been discovered in danpros HTMLy up to 3.1.1. This affects the function addcontent of the file /system/admin/admin.php of the component Admin Content Endpoint. Performing a manipulation of the argument oldfile results in path traversal. The attack may be initiated remotely. Th...