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postcss@8.3.2 vulnerabilities

Tool for transforming styles with JS plugins

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Direct Vulnerabilities

Known vulnerabilities in the postcss package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
  • M
Improper Input Validation

postcss is a PostCSS is a tool for transforming styles with JS plugins.

Affected versions of this package are vulnerable to Improper Input Validation when parsing external Cascading Style Sheets (CSS) with linters using PostCSS. An attacker can cause discrepancies by injecting malicious CSS rules, such as @font-face{ font:(\r/*);}. This vulnerability is because of an insecure regular expression usage in the RE_BAD_BRACKET variable.

How to fix Improper Input Validation?

Upgrade postcss to version 8.4.31 or higher.

<8.4.31
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