chore(deps): update dependency postcss to v8.5.10 [security] by renovate[bot] · Pull Request #289 · stipsan/react-spring-bottom-sheet

renovate · 2023-10-08T06:05:37Z

This PR contains the following updates:

Package	Change	Age	Confidence
postcss (source)	`8.4.5` → `8.5.10`

PostCSS line return parsing error

CVE-2023-44270 / GHSA-7fh5-64p2-3v2j

More information

Details

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.

Severity

CVSS Score: 5.3 / 10 (Medium)
Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

PostCSS has XSS via Unescaped </style> in its CSS Stringify Output

CVE-2026-41305 / GHSA-qx2v-qp2m-jg93

More information

Details

PostCSS: XSS via Unescaped `</style>` in CSS Stringify Output

Summary

PostCSS v8.5.5 (latest) does not escape </style> sequences when stringifying CSS ASTs. When user-submitted CSS is parsed and re-stringified for embedding in HTML <style> tags, </style> in CSS values breaks out of the style context, enabling XSS.

Proof of Concept

const postcss = require('postcss');

// Parse user CSS and re-stringify for page embedding
const userCSS = 'body { content: "</style><script>alert(1)</script><style>"; }';
const ast = postcss.parse(userCSS);
const output = ast.toResult().css;
const html = `<style>${output}</style>`;

console.log(html);
// <style>body { content: "</style><script>alert(1)</script><style>"; }</style>
//
// Browser: </style> closes the style tag, <script> executes

Tested output (Node.js v22, postcss v8.5.5):

Input: body { content: "</style><script>alert(1)</script><style>"; }
Output: body { content: "</style><script>alert(1)</script><style>"; }
Contains </style>: true

Impact

Impact non-bundler use cases since bundlers for XSS on their own. Requires some PostCSS plugin to have malware code, which can inject XSS to website.

Suggested Fix

Escape </style in all stringified output values:

output = output.replace(/<\/(style)/gi, '<\\/$1');

Credits

Discovered and reported by Sunil Kumar (@TharVid)

Severity

CVSS Score: 6.1 / 10 (Medium)
Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

Release Notes

postcss/postcss (postcss)

`v8.5.10`

Compare Source

Fixed XSS via unescaped </style> in non-bundler cases (by @TharVid).

`v8.5.9`

Compare Source

Speed up source map encoding paring in case of the error.

`v8.5.8`

Compare Source

Fixed Processor#version.

`v8.5.7`

Compare Source

Improved source map annotation cleaning performance (by CodeAnt AI).

`v8.5.6`

Compare Source

Fixed ContainerWithChildren type discriminating (by @Goodwine).

`v8.5.5`

Compare Source

Fixed package.json→exports compatibility with some tools (by @JounQin).

`v8.5.4`

Compare Source

Fixed Parcel compatibility issue (by @git-sumitchaudhary).

`v8.5.3`

Compare Source

Added more details to Unknown word error (by @hiepxanh).
Fixed types (by @romainmenke).
Fixed docs (by @catnipan).

`v8.5.2`

Compare Source

Fixed end position of rules with semicolon (by @romainmenke).

`v8.5.1`

Compare Source

Fixed backwards compatibility for complex cases (by @romainmenke).

`v8.5.0`: 8.5 “Duke Alloces”

Compare Source

PostCSS 8.5 brought API to work better with non-CSS sources like HTML, Vue.js/Svelte sources or CSS-in-JS.

@romainmenke during his work on Stylelint added Input#document in additional to Input#css.

root.source.input.document //=> "<p>Hello</p>
                           //    <style>
                           //    p {
                           //      color: green;
                           //    }
                           //    </style>"
root.source.input.css      //=> "p {
                           //      color: green;
                           //    }"

Thanks to Sponsors

This release was possible thanks to our community.

If your company wants to support the sustainability of front-end infrastructure or wants to give some love to PostCSS, you can join our supporters by:

Tidelift with a Spotify-like subscription model supporting all projects from your lock file.
Direct donations at GitHub Sponsors or Open Collective.

`v8.4.49`

Compare Source

Fixed custom syntax without source.offset (by @romainmenke).

`v8.4.48`

Compare Source

Fixed position calculation in error/warnings methods (by @romainmenke).

`v8.4.47`

Compare Source

Removed debug code.

`v8.4.46`

Compare Source

Fixed Cannot read properties of undefined (reading 'before').

`v8.4.45`

Compare Source

Removed unnecessary fix which could lead to infinite loop.

`v8.4.44`

Compare Source

Another way to fix markClean is not a function error.

`v8.4.43`

Compare Source

Fixed markClean is not a function error.

`v8.4.42`

Compare Source

Fixed CSS syntax error on long minified files (by @varpstar).

`v8.4.41`

Compare Source

Fixed types (by @nex3 and @querkmachine).
Cleaned up RegExps (by @bluwy).

`v8.4.40`

Compare Source

Moved to getter/setter in nodes types to help Sass team (by @nex3).

`v8.4.39`

Compare Source

Fixed CssSyntaxError types (by @romainmenke).

`v8.4.38`

Compare Source

Fixed endIndex: 0 in errors and warnings (by @romainmenke).

`v8.4.37`

Compare Source

Fixed original.column are not numbers error in another case.

`v8.4.36`

Compare Source

Fixed original.column are not numbers error on broken previous source map.

`v8.4.35`

Compare Source

Avoid ! in node.parent.nodes type.
Allow to pass undefined to node adding method to simplify types.

`v8.4.34`

Compare Source

Fixed AtRule#nodes type (by Tim Weißenfels).
Cleaned up code (by Dmitry Kirillov).

`v8.4.33`

Compare Source

Fixed NoWorkResult behavior difference with normal mode (by Romain Menke).
Fixed NoWorkResult usage conditions (by @ahmdammarr).

`v8.4.32`

Compare Source

Fixed postcss().process() types (by Andrew Ferreira).

`v8.4.31`

Compare Source

Fixed \r parsing to fix CVE-2023-44270.

`v8.4.30`

Compare Source

Improved source map performance (by Romain Menke).

`v8.4.29`

Compare Source

Fixed Node#source.offset (by Ido Rosenthal).
Fixed docs (by Christian Oliff).

`v8.4.28`

Compare Source

Fixed Root.source.end for better source map (by Romain Menke).
Fixed Result.root types when process() has no parser.

`v8.4.27`

Compare Source

Fixed Container clone methods types.

`v8.4.26`

Compare Source

Fixed clone methods types.

`v8.4.25`

Compare Source

Improve stringify performance (by Romain Menke).
Fixed docs (by @vikaskaliramna07).

`v8.4.24`

Compare Source

Fixed Plugin types.

`v8.4.23`

Compare Source

Fixed warnings in TypeDoc.

`v8.4.22`

Compare Source

Fixed TypeScript support with node16 (by Remco Haszing).

`v8.4.21`

Compare Source

Fixed Input#error types (by Aleks Hudochenkov).

`v8.4.20`

Compare Source

Fixed source map generation for childless at-rules like @layer.

`v8.4.19`

Compare Source

Fixed whitespace preserving after AST transformations (by Romain Menke).

`v8.4.18`

Compare Source

Fixed an error on absolute: true with empty sourceContent (by Rene Haas).

`v8.4.17`

Compare Source

Fixed Node.before() unexpected behavior (by Romain Menke).
Added TOC to docs (by Mikhail Dedov).

`v8.4.16`

Compare Source

Fixed Root AST migration.

`v8.4.15`

Compare Source

Fixed AST normalization after using custom parser with old PostCSS AST.

`v8.4.14`

Compare Source

Print “old plugin API” warning only if plugin was used (by @zardoy).

`v8.4.13`

Compare Source

Fixed append() error after using .parent (by Jordan Pittman).

`v8.4.12`

Compare Source

Fixed package.funding to have same value between all PostCSS packages.

`v8.4.11`

Compare Source

Fixed Declaration#raws.value type.

`v8.4.10`

Compare Source

Fixed package.funding URL format.

`v8.4.9`

Compare Source

Fixed package.funding (by Álvaro Mondéjar).

`v8.4.8`

Compare Source

Fixed end position in empty Custom Properties.

`v8.4.7`

Compare Source

Fixed Node#warn() type (by Masafumi Koba).
Fixed comment removal in values after ,.

`v8.4.6`

Compare Source

Prevented comment removing when it change meaning of CSS.
Fixed parsing space in last semicolon-less CSS Custom Properties.
Fixed comment cleaning in CSS Custom Properties with space.
Fixed throwing an error on .root access for plugin-less case.

Configuration

📅 Schedule: (UTC)

Branch creation
- ""
Automerge
- At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

If you want to rebase/retry this PR, check this box

This PR has been generated by Mend Renovate using a curated preset maintained by . View repository job log here

renovate · 2023-10-08T06:05:39Z

⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

any of the package files in this branch needs updating, or
the branch becomes conflicted, or
you click the rebase/retry checkbox if found above, or
you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: package-lock.json

npm WARN old lockfile 
npm WARN old lockfile The package-lock.json file was created with an old version of npm,
npm WARN old lockfile so supplemental metadata must be fetched from the registry.
npm WARN old lockfile 
npm WARN old lockfile This is a one-time fix-up, please be patient...
npm WARN old lockfile 
npm WARN deprecated @types/classnames@2.3.1: This is a stub types definition. classnames provides its own type definitions, so you do not need this installed.
npm WARN deprecated rollup-plugin-terser@7.0.2: This package has been deprecated and is no longer maintained. Please use @rollup/plugin-terser
npm WARN deprecated flatten@1.0.3: flatten is deprecated in favor of utility frameworks such as lodash.
npm WARN deprecated querystring@0.2.1: The querystring API is considered Legacy. new code should use the URLSearchParams API instead.
npm WARN deprecated @babel/plugin-proposal-json-strings@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-json-strings instead.
npm WARN deprecated @babel/plugin-proposal-logical-assignment-operators@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-logical-assignment-operators instead.
npm WARN deprecated @babel/plugin-proposal-dynamic-import@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-dynamic-import instead.
npm WARN deprecated @babel/plugin-proposal-export-namespace-from@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-export-namespace-from instead.
npm WARN deprecated @babel/plugin-proposal-class-static-block@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-class-static-block instead.
npm WARN deprecated @babel/plugin-proposal-class-properties@7.12.1: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-class-properties instead.
npm WARN deprecated @babel/plugin-proposal-async-generator-functions@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-async-generator-functions instead.
npm WARN deprecated @babel/plugin-proposal-private-property-in-object@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-private-property-in-object instead.
npm WARN deprecated @babel/plugin-proposal-unicode-property-regex@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-unicode-property-regex instead.
npm WARN deprecated @babel/plugin-proposal-optional-catch-binding@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-optional-catch-binding instead.
npm WARN deprecated @babel/plugin-proposal-nullish-coalescing-operator@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-nullish-coalescing-operator instead.
npm WARN deprecated @babel/plugin-proposal-private-methods@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-private-methods instead.
npm WARN deprecated @babel/plugin-proposal-numeric-separator@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-numeric-separator instead.
npm WARN deprecated stable@0.1.8: Modern JS already guarantees Array#sort() is a stable sort, so this library is deprecated. See the compatibility table on MDN: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort#browser_compatibility
npm WARN deprecated @babel/plugin-proposal-class-properties@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-class-properties instead.
npm WARN deprecated @babel/plugin-proposal-object-rest-spread@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-object-rest-spread instead.
npm WARN deprecated @babel/plugin-proposal-optional-chaining@7.16.7: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-optional-chaining instead.
npm WARN deprecated sourcemap-codec@1.4.8: Please use @jridgewell/sourcemap-codec instead
npm WARN deprecated querystring@0.2.0: The querystring API is considered Legacy. new code should use the URLSearchParams API instead.
npm WARN deprecated babel-eslint@10.1.0: babel-eslint is now @babel/eslint-parser. This package will no longer receive updates.
npm WARN deprecated react-use-gesture@8.0.1: This package is no longer maintained. Please use @use-gesture/react instead
npm WARN deprecated svgo@1.3.2: This SVGO version is no longer supported. Upgrade to v2.x.x.
npm WARN deprecated core-js-pure@3.20.1: core-js-pure@<3.23.3 is no longer maintained and not recommended for usage due to the number of issues. Because of the V8 engine whims, feature detection in old core-js versions could cause a slowdown up to 100x even if nothing is polyfilled. Some versions have web compatibility issues. Please, upgrade your dependencies to the actual version of core-js-pure.
npm ERR! code ERESOLVE
npm ERR! ERESOLVE could not resolve
npm ERR! 
npm ERR! While resolving: @tailwindcss/forms@0.4.0
npm ERR! Found: tailwindcss@2.2.19
npm ERR! node_modules/tailwindcss
npm ERR!   dev tailwindcss@"^2.0.1" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer tailwindcss@">=3.0.0 || >= 3.0.0-alpha.1" from @tailwindcss/forms@0.4.0
npm ERR! node_modules/@tailwindcss/forms
npm ERR!   dev @tailwindcss/forms@"^0.4.0" from the root project
npm ERR! 
npm ERR! Conflicting peer dependency: tailwindcss@3.3.3
npm ERR! node_modules/tailwindcss
npm ERR!   peer tailwindcss@">=3.0.0 || >= 3.0.0-alpha.1" from @tailwindcss/forms@0.4.0
npm ERR!   node_modules/@tailwindcss/forms
npm ERR!     dev @tailwindcss/forms@"^0.4.0" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR! 
npm ERR! 
npm ERR! For a full report see:
npm ERR! /tmp/worker/7cd039/56f945/cache/others/npm/_logs/2023-10-08T06_05_19_643Z-eresolve-report.txt

npm ERR! A complete log of this run can be found in: /tmp/worker/7cd039/56f945/cache/others/npm/_logs/2023-10-08T06_05_19_643Z-debug-0.log

socket-security · 2023-10-08T06:10:52Z

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	postcss@8.4.5 ⏵ 8.5.10		⁺³	^-4

View full report

vercel · 2025-01-23T19:03:40Z

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
react-spring-bottom-sheet	Error		May 29, 2026 12:13am

socket-security · 2026-04-27T22:50:41Z

All alerts resolved. Learn more about Socket for GitHub.

This PR previously contained dependency changes with security issues that have been resolved, removed, or ignored.

View full report

renovate Bot added 📦 deps 🤖 bot labels Oct 8, 2023

vercel Bot had a problem deploying to Preview October 8, 2023 06:05 Failure

renovate Bot force-pushed the renovate/npm-postcss-vulnerability branch from 2835654 to 5018100 Compare January 23, 2025 19:03

vercel Bot had a problem deploying to Preview January 23, 2025 19:03 Failure

renovate Bot force-pushed the renovate/npm-postcss-vulnerability branch from 5018100 to 4ca0a64 Compare March 11, 2025 15:57

vercel Bot had a problem deploying to Preview March 11, 2025 15:57 Failure

renovate Bot force-pushed the renovate/npm-postcss-vulnerability branch from 4ca0a64 to 11ae476 Compare March 17, 2025 14:34

vercel Bot had a problem deploying to Preview March 17, 2025 14:34 Failure

renovate Bot force-pushed the renovate/npm-postcss-vulnerability branch from 11ae476 to 9c9a8bf Compare April 1, 2025 09:49

vercel Bot had a problem deploying to Preview April 1, 2025 09:49 Failure

renovate Bot force-pushed the renovate/npm-postcss-vulnerability branch from 9c9a8bf to 4f3b285 Compare November 11, 2025 02:06

vercel Bot had a problem deploying to Preview November 11, 2025 02:08 Failure

renovate Bot force-pushed the renovate/npm-postcss-vulnerability branch from 4f3b285 to a765af9 Compare November 18, 2025 12:06

vercel Bot had a problem deploying to Preview November 18, 2025 12:07 Failure

renovate Bot changed the title ~~chore(deps): update dependency postcss to v8.4.31 [security]~~ chore(deps): update dependency postcss to v8.4.31 [security] - autoclosed Mar 27, 2026

renovate Bot closed this Mar 27, 2026

renovate Bot deleted the renovate/npm-postcss-vulnerability branch March 27, 2026 01:08

renovate Bot changed the title ~~chore(deps): update dependency postcss to v8.4.31 [security] - autoclosed~~ chore(deps): update dependency postcss to v8.4.31 [security] Mar 30, 2026

renovate Bot reopened this Mar 30, 2026

renovate Bot force-pushed the renovate/npm-postcss-vulnerability branch 2 times, most recently from a765af9 to 56c2023 Compare March 30, 2026 17:39

vercel Bot had a problem deploying to Preview March 30, 2026 17:41 Failure

renovate Bot changed the title ~~chore(deps): update dependency postcss to v8.4.31 [security]~~ chore(deps): update dependency postcss to v8.4.31 [security] - autoclosed Apr 27, 2026

renovate Bot closed this Apr 27, 2026

renovate Bot changed the title ~~chore(deps): update dependency postcss to v8.4.31 [security] - autoclosed~~ chore(deps): update dependency postcss to v8.4.31 [security] Apr 27, 2026

renovate Bot reopened this Apr 27, 2026

renovate Bot force-pushed the renovate/npm-postcss-vulnerability branch 2 times, most recently from 56c2023 to 011c00b Compare April 27, 2026 22:49

vercel Bot had a problem deploying to Preview April 27, 2026 22:51 Failure

renovate Bot force-pushed the renovate/npm-postcss-vulnerability branch from 011c00b to 379cfe2 Compare May 12, 2026 16:00

vercel Bot had a problem deploying to Preview May 12, 2026 16:01 Failure

chore(deps): update dependency postcss to v8.5.10 [security]

84f6df9

renovate Bot force-pushed the renovate/npm-postcss-vulnerability branch from 379cfe2 to 84f6df9 Compare May 29, 2026 00:12

renovate Bot changed the title ~~chore(deps): update dependency postcss to v8.4.31 [security]~~ chore(deps): update dependency postcss to v8.5.10 [security] May 29, 2026

vercel Bot had a problem deploying to Preview May 29, 2026 00:13 Failure

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

chore(deps): update dependency postcss to v8.5.10 [security]#289

chore(deps): update dependency postcss to v8.5.10 [security]#289
renovate[bot] wants to merge 1 commit into
mainfrom
renovate/npm-postcss-vulnerability

renovate Bot commented Oct 8, 2023 •

edited

Loading

Uh oh!

renovate Bot commented Oct 8, 2023

Uh oh!

socket-security Bot commented Oct 8, 2023 •

edited

Loading

Uh oh!

vercel Bot commented Jan 23, 2025 •

edited

Loading

Uh oh!

socket-security Bot commented Apr 27, 2026 •

edited

Loading

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

0 participants

Conversation

renovate Bot commented Oct 8, 2023 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

PostCSS line return parsing error

Details

Severity

References

PostCSS has XSS via Unescaped </style> in its CSS Stringify Output

Details

PostCSS: XSS via Unescaped </style> in CSS Stringify Output

Summary

Proof of Concept

Impact

Suggested Fix

Credits

Severity

References

Release Notes

v8.5.0: 8.5 “Duke Alloces”

Thanks to Sponsors

Configuration

Uh oh!

renovate Bot commented Oct 8, 2023

⚠ Artifact update problem

File name: package-lock.json

Uh oh!

socket-security Bot commented Oct 8, 2023 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

vercel Bot commented Jan 23, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

socket-security Bot commented Apr 27, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

0 participants

renovate Bot commented Oct 8, 2023 •

edited

Loading

PostCSS: XSS via Unescaped `</style>` in CSS Stringify Output

`v8.5.0`: 8.5 “Duke Alloces”

socket-security Bot commented Oct 8, 2023 •

edited

Loading

vercel Bot commented Jan 23, 2025 •

edited

Loading

socket-security Bot commented Apr 27, 2026 •

edited

Loading