Name of the Vulnerable Software and Affected Versions:
ExpressionEngine versions prior to 5.4.2
ExpressionEngine versions 6.x prior to 6.0.3
Description:
The issue allows PHP code injection by certain authenticated users who can leverage `Translate::save()` to write to an lang.php file under the system/user/language directory. This can be exploited by authenticated users.
Recommendations:
For ExpressionEngine versions prior to 5.4.2, update to version 5.4.2 or later.
For ExpressionEngine versions 6.x prior to 6.0.3, update to version 6.0.3 or later.
As a temporary workaround, consider restricting access to the `Translate::save()` function until a patch is available.