CVE-2022-21222: Uncontrolled Resource Consumption

September 30, 2022 (updated August 8, 2023)

The package css-what before 2.1.3 is vulnerable to Regular Expression Denial of Service (ReDoS) due to the usage of insecure regular expression in the re_attr variable of index.js. The exploitation of this vulnerability could be triggered via the parse function.

References

github.com/fb55/css-what/blob/a38effd5a8f5506d75c7f8f13cbd8c76248a3860/index.js%23L12
nvd.nist.gov/vuln/detail/CVE-2022-21222
security.snyk.io/vuln/SNYK-JS-CSSWHAT-3035488

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