CVE-2023-44270

5.3 MEDIUM
Published: September 29, 2023 Modified: November 03, 2025
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/postcss/postcss/releases/tag/8.4.31
Source: cve@mitre.org
Patch Release Notes
https://github.com/github/advisory-database/issues/2820
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking
https://github.com/postcss/postcss/blob/main/lib/tokenize.js#L25
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking
https://github.com/postcss/postcss/releases/tag/8.4.31
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Release Notes

9 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.2%
41th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

postcss