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.
This PR contains the following updates:
8.4.16->8.4.31GitHub Vulnerability Alerts
CVE-2023-44270
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
\rdiscrepancies, 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.
Release Notes
postcss/postcss (postcss)
### [`v8.4.31`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8431) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.30...8.4.31) - Fixed `\r` parsing to fix CVE-2023-44270. ### [`v8.4.30`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8430) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.29...8.4.30) - Improved source map performance (by Romain Menke). ### [`v8.4.29`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8429) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.28...8.4.29) - Fixed `Node#source.offset` (by Ido Rosenthal). - Fixed docs (by Christian Oliff). ### [`v8.4.28`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8428) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.27...8.4.28) - Fixed `Root.source.end` for better source map (by Romain Menke). - Fixed `Result.root` types when `process()` has no parser. ### [`v8.4.27`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8427) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.26...8.4.27) - Fixed `Container` clone methods types. ### [`v8.4.26`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8426) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.25...8.4.26) - Fixed clone methods types. ### [`v8.4.25`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8425) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.24...8.4.25) - Improve stringify performance (by Romain Menke). - Fixed docs (by [@vikaskaliramna07](https://togithub.com/vikaskaliramna07)). ### [`v8.4.24`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8424) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.23...8.4.24) - Fixed `Plugin` types. ### [`v8.4.23`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8423) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.22...8.4.23) - Fixed warnings in TypeDoc. ### [`v8.4.22`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8422) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.21...8.4.22) - Fixed TypeScript support with `node16` (by Remco Haszing). ### [`v8.4.21`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8421) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.20...8.4.21) - Fixed `Input#error` types (by Aleks Hudochenkov). ### [`v8.4.20`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8420) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.19...8.4.20) - Fixed source map generation for childless at-rules like `@layer`. ### [`v8.4.19`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8419) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.18...8.4.19) - Fixed whitespace preserving after AST transformations (by Romain Menke). ### [`v8.4.18`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8418) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.17...8.4.18) - Fixed an error on `absolute: true` with empty `sourceContent` (by Rene Haas). ### [`v8.4.17`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8417) [Compare Source](https://togithub.com/postcss/postcss/compare/8.4.16...8.4.17) - Fixed `Node.before()` unexpected behavior (by Romain Menke). - Added TOC to docs (by Mikhail Dedov).Configuration
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