Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
A vulnerability, which was classified as critical, was found in hughsk flat versions prior to 1.6.2, 2.0.x prior to 2.0.2, 3.0.x prior to 3.0.1, 4.0.x prior to 4.1.1, and 5.0.x prior to 5.0.1. This affects the function "unflatten" of the file "index.js". The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). It is possible to initiate the attack remotely. It is recommended to upgrade the affected component. The identifier VDB-216777 was assigned to this vulnerability.
CWE-1321 - Prototype Pollution