postcss vulnerabilities

Browse known CVEs and advisories by package and ecosystem. Severity tells you the worst case. What determines real risk is whether the vulnerable code actually runs in your applications.

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CVE-IDSeverityPackage summary
CVE-2026-69153Mediumpostcss: PostCSS: incomplete fix of GHSA-6g55-p6wh-862q — attacker-controlled sourceMappingURL reads arbitrary .map files when `from` is unsetCVE-2026-73646Highpostcss: PostCSS: Path Traversal in Previous Source Map Auto-Loading (sourceMappingURL) leads to Arbitrary .map File DisclosureCVE-2026-45623Highpostcss: PostCSS: Arbitrary file read and information disclosure via attacker-controlled sourceMappingURL in CSS commentsCVE-2026-41305Mediumpostcss: PostCSS has XSS via Unescaped </style> in its CSS Stringify OutputCVE-2023-44270Mediumpostcss: PostCSS line return parsing errorCVE-2021-23382Mediumpostcss: Regular Expression Denial of Service in postcssCVE-2021-23368Mediumpostcss: Regular Expression Denial of Service in postcss

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