High severity7.5NVD Advisory· Published Jan 14, 2022· Updated Jun 17, 2026
CVE-2021-23567
CVE-2021-23567
Description
The package colors after 1.4.0 are vulnerable to Denial of Service (DoS) that was introduced through an infinite loop in the americanFlag module. Unfortunately this appears to have been a purposeful attempt by a maintainer of colors to make the package unusable, other maintainers' controls over this package appear to have been revoked in an attempt to prevent them from fixing the issue. Vulnerable Code js for (let i = 666; i < Infinity; i++;) { Alternative Remediation Suggested * Pin dependancy to 1.4.0
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
colorsnpm | >= 1.4.1 | — |
Affected products
4cpe:2.3:a:colors.js_project:colors.js:1.4.1:*:*:*:*:node.js:*:*+ 1 more
- cpe:2.3:a:colors.js_project:colors.js:1.4.1:*:*:*:*:node.js:*:*
- cpe:2.3:a:colors.js_project:colors.js:1.4.44-liberty-2:*:*:*:*:node.js:*:*
- colors/colorsdescription
Patches
Vulnerability mechanics
References
8- github.com/Marak/colors.js/commit/074a0f8ed0c31c35d13d28632bd8a049ff136fb6%23diff-92bbac9a308cd5fcf9db165841f2d90ce981baddcb2b1e26cfff170929af3bd1R18nvdPatchThird Party AdvisoryWEB
- github.com/Marak/colors.js/issues/285nvdExploitIssue TrackingThird Party AdvisoryWEB
- github.com/Marak/colors.js/issues/285%23issuecomment-1008212640nvdExploitIssue TrackingThird Party AdvisoryWEB
- snyk.io/blog/open-source-maintainer-pulls-the-plug-on-npm-packages-colors-and-faker-now-what/nvdExploitMitigationThird Party Advisory
- snyk.io/vuln/SNYK-JS-COLORS-2331906nvdExploitThird Party AdvisoryWEB
- github.com/advisories/GHSA-gh88-3pxp-6fm8ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-23567ghsaADVISORY
- snyk.io/blog/open-source-maintainer-pulls-the-plug-on-npm-packages-colors-and-faker-now-whatghsaWEB
News mentions
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