A vulnerability was found in Lagom WHMCS Template up to 2.3.7 and classified as problematic. Impacted is an unknown function of the component Datatables. The manipulation results in improperly controlled modification of object prototype attributes.
This vulnerability is known as CVE-2026-4239. It is possible to launch the attack remotely. Furthermore, an exploit is available.
The vendor was contacted early about this disclosure but did not respond in any way.
