An issue was discovered in PostCSS before 8.4.31. The vulnerability affects linters using PostCSS to parse external untrusted CSS. An attacker can prepare CSS in such a way that it will contains parts parsed by PostCSS as a CSS comment. After processing by PostCSS, it will be included in the PostCSS output in CSS nodes (rules, properties) despite being included in a comment.
CVE-2023-44270 - Medium Severity Vulnerability
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-8.4.14.tgz
Path to dependency file: /package.json
Path to vulnerable library: /package.json
Dependency Hierarchy: - next-13.1.6.tgz (Root Library) - :x: **postcss-8.4.14.tgz** (Vulnerable Library)
Found in HEAD commit: b499881cc1f0f20f19e634f0d6fa750699f3ea92
Found in base branch: main
An issue was discovered in PostCSS before 8.4.31. The vulnerability affects linters using PostCSS to parse external untrusted CSS. An attacker can prepare CSS in such a way that it will contains parts parsed by PostCSS as a CSS comment. After processing by PostCSS, it will be included in the PostCSS output in CSS nodes (rules, properties) despite being included in a comment.
Publish Date: 2023-09-29
URL: CVE-2023-44270
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: Low - Availability Impact: None
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://www.cve.org/CVERecord?id=CVE-2023-44270
Release Date: 2023-09-29
Fix Resolution (postcss): 8.4.31
Direct dependency fix Resolution (next): 13.5.4-canary.8
Step up your Open Source Security Game with Mend here