CVE-2026-4591 | kalcaddle kodbox 1.64 fileThumb Endpoint app.php checkBin os command injection

A vulnerability was found in kalcaddle kodbox 1.64 and classified as critical. This affects the function checkBin of the file /workspace/source-code/plugins/fileThumb/app.php of the component fileThumb Endpoint. Executing a manipulation can lead to os command injection.

This vulnerability is handled as CVE-2026-4591. The attack can be executed remotely. Additionally, an exploit exists.

The vendor was contacted early about this disclosure but did not respond in any way.