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cve[email protected]CVE-2023-44270
HistorySep 29, 2023 - 10:15 p.m.

CVE-2023-44270

2023-09-2922:15:11
CWE-74
web.nvd.nist.gov
123
postcss
vulnerability
css
parsing
external
untrusted
linters

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

4.9 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

20.6%

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 configurations

NVD
Node
postcsspostcssRange<8.4.31node.js
CPENameOperatorVersion
postcss:postcsspostcsslt8.4.31

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

4.9 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

20.6%