npm vulnerability intelligence

postcss NPM Package
Vulnerability Check

Tool for transforming styles with JS plugins

Moderate MIT v8.5.15
Vulnerability Analysis OSV Live

postcss

v8.5.15 · MIT · 225,473,101 dl/wk

Advisory Breakdown

Critical 0
High 0
Moderate 4
Low 0

Severity Rating

Moderate

4 advisories

Moderate

Weekly downloads

225,473,101

Total advisories

4

Latest version

8.5.15

License

MIT

Advisories Package Info Runtime

Known advisories

OSV records for the npm ecosystem

4
GHSA-566m-qj78-rww5 CVE-2021-23382 moderate

Regular Expression Denial of Service in postcss

Affected: >=8.0.0 <8.2.13, >=0 <7.0.36 Fixed in: 8.2.13, 7.0.36 Updated Jan 14, 2025
View source
GHSA-7fh5-64p2-3v2j CVE-2023-44270 moderate

PostCSS line return parsing error

Affected: >=0 <8.4.31 Fixed in: 8.4.31 Updated Nov 4, 2025
View source
GHSA-hwj9-h5mp-3pm3 CVE-2021-23368 moderate

Regular Expression Denial of Service in postcss

Affected: >=7.0.0 <7.0.36, >=8.0.0 <8.2.10 Fixed in: 7.0.36, 8.2.10 Updated Jan 14, 2025
View source
GHSA-qx2v-qp2m-jg93 CVE-2026-41305 moderate

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

Affected: >=0 <8.5.10 Fixed in: 8.5.10 Updated May 6, 2026
View source

Checked Jun 7, 2026, 5:41 PM from npm and OSV.dev

Package metadata

From the npm registry

Package name
postcss
Ecosystem
npm
Latest version
8.5.15
License
MIT
Weekly downloads
225,473,101
Repository
Open repository

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Data from npm registry and OSV.dev · Checked 6/7/2026, 5:41:34 PM