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Postcss

8 CVEs tracked. None of them is in CISA KEV.

This hub aggregates every CVE we track for Postcss, a product in the oss libraries space. Use it to gauge the current risk picture and drill into individual advisories.

Postcss CVEs per month

Dec 2024 to Nov 2026. Point at a month, or focus the strip and use the arrow keys.
Postcss CVEs per month
MonthCVEs
2024-120
2025-010
2025-020
2025-030
2025-040
2025-050
2025-060
2025-070
2025-080
2025-090
2025-100
2025-110
2025-120
2026-010
2026-020
2026-030
2026-041
2026-050
2026-060
2026-072
2026-082
2026-090
2026-100
2026-110

Severity

How the 8 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.

  • High229%
  • Medium571%

Latest CVEs

The 8 most recently published vulnerabilities affecting Postcss.

  1. CVE-2026-73646PostCSS: Path Traversal in Previous Source Map Auto-Loading (sourceMappingURL) leads to Arbitrary .map File Disclosure7.5
  2. CVE-2026-69153PostCSS: incomplete fix of CVE-2026-45623 — attacker-controlled sourceMappingURL reads arbitrary .map files when `from` is unset5.3
  3. CVE-2026-45623PostCSS: Arbitrary file read and information disclosure via attacker-controlled sourceMappingURL in CSS comments7.5
  4. GHSA-r28c-9q8g-f849PostCSS: Path Traversal in Previous Source Map Auto-Loading (sourceMappingURL) leads to Arbitrary .map File Disclosure—
  5. CVE-2026-41305PostCSS has XSS via Unescaped </style> in its CSS Stringify Output6.1
  6. CVE-2023-44270An 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 pa...5.3
  7. CVE-2021-23382Regular Expression Denial of Service (ReDoS)5.3
  8. CVE-2021-23368Regular Expression Denial of Service (ReDoS)5.3

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