npm/postcss-selector-parser CVE-2026-104844: medium 5.9, EPSS 0.39%
PostCSS: Quadratic complexity in flat selector parsing allows CPU exhaustion
Action: Upgrade postcss-selector-parser to 6.1.5 (6.x) or 7.1.6 (7.x) or later.
npm i postcss-selector-parser@7.1.6npm i postcss-selector-parser@6.1.5Affected
| introduced | fixed | last affected |
|---|---|---|
| 7.0.0 | 7.1.6 | - |
| 0 | 6.1.5 | - |
Fixed versions
| 7.1.6 | 6.1.5 |
Sources
- osv: GHSA-rj75-hqrm-r3gf
- https://github.com/postcss/postcss-selector-parser/security/advisories/GHSA-rj75-hqrm-r3gf
- https://nvd.nist.gov/vuln/detail/CVE-2026-104844
- https://github.com/postcss/postcss-selector-parser/commit/62b191792df0a0bc56062e5a875bc74aae2a51cd
- https://github.com/postcss/postcss-selector-parser
- https://github.com/postcss/postcss-selector-parser/releases/tag/7.1.6
- https://github.com/postcss/postcss-selector-parser/pull/346
- https://github.com/postcss/postcss-selector-parser/commit/70b0779c843462197380d25daa02d1528bf7eae5
- https://github.com/postcss/postcss-selector-parser/releases/tag/6.1.5
CVE-2026-104844 · published · modified · JSON