Vulnerability DatabaseCVE-2023-44270
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CVE-2023-44270
September 29, 2023
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.
Affected Packages
postcss (NPM):
Affected version(s) >=0.1.0 <8.4.31
Fix Suggestion:
Update to version 8.4.31
Related Resources (8)
https://github.com/github/advisory-database/issues/2820
https://github.com/postcss/postcss/releases/tag/8.4.31
https://nvd.nist.gov/vuln/detail/CVE-2023-44270
https://github.com/postcss/postcss/commit/58cc860b4c1707510c9cd1bc1fa30b423a9ad6c5
https://security-tracker.debian.org/tracker/CVE-2023-44270
https://github.com/postcss/postcss/blob/main/lib/tokenize.js#L25
https://github.com/postcss/postcss
https://lists.debian.org/debian-lts-announce/2024/12/msg00025.html
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CVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-74
Improper Neutralization of Line Delimiters
CWE-144
EPSS
Base Score:
0.2