All the vulnerabilities related to the version 4.0.7 of the package
Regular Expression Denial of Service in clean-css
Version of clean-css
prior to 4.1.11 are vulnerable to Regular Expression Denial of Service (ReDoS). Untrusted input may cause catastrophic backtracking while matching regular expressions. This can cause the application to be unresponsive leading to Denial of Service.
Upgrade to version 4.1.11 or higher.