CVE-2022-21222: Css-What Project Css-What

High severity, CVSS 7.5. EPSS: 1.9% chance of exploitation in the next 30 days.

The package css-what before 2.1.3 are 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.

Affected products

• Css-What Project Css-What: before 2.1.3 (fixed in 2.1.3)

Published 2022-09-30. Last modified 2026-06-17.