GHSA-rj75-hqrm-r3gf

PostCSS: Quadratic complexity in flat selector parsing allows CPU exhaustion

Medium highest severity reported · also known as CVE-2026-104844

7
catalog tools match this advisory
0
ship the vulnerable code in their release binary (Go tools analyzed with govulncheck)
No
in the CISA KEV catalog
0.4%
EPSS for CVE-2026-104844, percentile 33

Catalog tools matching GHSA-rj75-hqrm-r3gf

ToolVersion scannedPackageFixed inReleased binaryDeclared in or found inDispute
sysdig-inspect
Container Security › Runtime Security
0.12.1postcss-selector-parser@2.2.3
npm
6.1.5not analyzedpackage-lock.jsonDispute
eslint-plugin-security
Static Application Security Testing (SAST) › Language-specific › JavaScript/Node.js
eslint-plugin-security-v4.2.1postcss-selector-parser@6.0.10
npm
6.1.5not analyzedpackage-lock.jsonDispute
gatekeeper
Policy as Code
v3.23.1postcss-selector-parser@6.0.10
npm
6.1.5not analyzedwebsite/yarn.lockDispute
phpstan
Static Application Security Testing (SAST) › Language-specific › PHP
2.3.4postcss-selector-parser@6.0.10
npm
6.1.5not analyzedwebsite/package-lock.jsonDispute
prowler
Cloud Security
5.47.0postcss-selector-parser@6.0.10
npm
6.1.5not analyzedui/pnpm-lock.yamlDispute
cloudsplaining
Cloud Security
0.9.1postcss-selector-parser@6.1.2
npm
6.1.5not analyzedpackage-lock.jsonDispute
cloudsplaining
Cloud Security
0.9.1postcss-selector-parser@7.1.1
npm
7.1.6not analyzedpackage-lock.jsonDispute
snyk-cli
Software Composition Analysis (SCA)
v1.1308.3postcss-selector-parser@6.0.6
npm
6.1.5not analyzedpackage-lock.jsonDispute

Vulnerabilities are known advisories that Grype matches against the dependencies declared in each project's release source (manifests and lockfiles, including development and build dependencies). A match does not mean the tool is exploitable: the vulnerable code may be unused, test-only, or not shipped in the released binary. KEV: listed in the CISA Known Exploited Vulnerabilities catalog. EPSS: FIRST's estimated probability of exploitation in the next 30 days. Both describe the vulnerability in general, not its exploitability through this tool; a match in a workflow file refers to a GitHub Action, not to shipped code. Released binary is only analyzed for Go tools with a Linux release binary; other tools show not analyzed.

Advisory sources

GitHub advisory GHSA-rj75-hqrm-r3gf · NVD CVE-2026-104844 · OSV GHSA-rj75-hqrm-r3gf

Grype data sources: https://github.com/advisories/GHSA-rj75-hqrm-r3gf