<p>Upgrade <code>postcss</code> to version 8.4.31 or higher.</p>

Improper Input Validation Affecting postcss package, versions <8.4.31

Snyk CVSS

Attack Complexity Low

Threat Intelligence

EPSS 0.05% (20^th percentile)

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Snyk ID SNYK-JS-POSTCSS-5926692
published 1 Oct 2023
disclosed 29 Sep 2023
credit Unknown

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Introduced: 29 Sep 2023

CVE-2023-44270 Open this link in a new tab CWE-20 Open this link in a new tab

How to fix?

Upgrade postcss to version 8.4.31 or higher.

Overview

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.