A vulnerability classified as problematic has been found in Mautic up to 4.4.16/5.2.7/6.0.4. The affected element is an unknown function of the file /s/ajax?action=lead:addLeadTags. This manipulation causes cross site scripting.

This vulnerability is registered as CVE-2025-9823. Remote exploitation of the attack is possible. No exploit is available.

It is recommended to upgrade the affected component.