# postcss-selector-parser (npm) vulnerabilities

2 known vulnerabilities (2 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://www.npmjs.com/package/postcss-selector-parser

## Advisories (2)

### [CVE-2026-104844](https://cve.now/CVE-2026-104844): PostCSS: Quadratic complexity in flat selector parsing allows CPU exhaustion

- Severity: Medium 5.9
- Published: Oct 2, 2026
- Affected: from 7.0.0, fixed in 7.1.6; fixed in 6.1.5.

### [CVE-2026-9358](https://cve.now/CVE-2026-9358): postcss-selector-parser AST Serialization container.js toString recursion

- Severity: Medium 5.3
- Published: May 24, 2026
- Affected: from 6.1.0, fixed in 6.1.3; from 7.1.0, fixed in 7.1.3.

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/packages/npm/postcss-selector-parser
Site guide for agents: https://cve.now/llms.txt
Uses NVD data; not endorsed by NVD.