A vulnerability classified as critical has been found in Mastodon up to 3.5.18/4.0.14/4.1.14/4.2.6. Affected is an unknown function of the component HTTP Header Handler. The manipulation of the argument Content-Type leads to unrestricted upload.

This vulnerability is traded as CVE-2024-25623. It is possible to launch the attack remotely. There is no exploit available.

It is recommended to upgrade the affected component.