PostCSS line return parsing error

中 5.3CVE-2023-44270 · GHSA-7fh5-64p2-3v2j · 29/09/2023 公開 · 17/06/2026 更新

要点

CVE-2023-44270 は postcss (postcss), postcss に影響する深刻度「中」 (CVSS 5.3) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.97%（全脆弱性の 62.0% より高い）。
対処：8.4.31 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
postcss postcss	`< 8.4.31`	`8.4.31`
postcss npm	`< 8.4.31`	`8.4.31`

概要

An issue was discovered in PostCSS before 8.4.31. It affects linters using PostCSS to parse external Cascading Style Sheets (CSS). There may be \r discrepancies, as demonstrated by @font-face{ font:(\r/*);} in a rule.

This 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 originally included in a comment.

NVD の説明

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.