The uglify-js package before 2.4.24 for Node.js does not properly account for non-boolean values when rewriting boolean expressions, which might allow attackers to bypass security mechanisms or possibly have unspecified other impact by leveraging improperly rewritten Javascript.

The uglify-js package before 2.6.0 for Node.js allows attackers to cause a denial of service (CPU consumption) via crafted input in a parse call, aka a "regular expression denial of service (ReDoS)."

uglify-js: Prototype pollution vulnerability in function DEFNODE in ast.js

Prototype pollution vulnerability in function DEFNODE in ast.js in mishoo UglifyJS 3.13.2 via the name variable in ast.js. NOTE: the vendor considers this an invalid report.