{"cve":"CVE-2021-29060","nvd":{"published":"2021-06-21T16:15:08.113","modified":"2026-06-17T03:47:13.097","status":"Modified","description":"A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in Color-String version 1.5.5 and below which occurs when the application is provided and checks a crafted invalid HWB string.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-770"],"references":["https://github.com/Qix-/color-string/commit/0789e21284c33d89ebc4ab4ca6f759b9375ac9d3","https://github.com/yetingli/PoCs/blob/main/CVE-2021-29060/Color-String.md","https://github.com/yetingli/SaveResults/blob/main/js/color-string.js","https://www.npmjs.com/package/color-string","https://github.com/Qix-/color-string/commit/0789e21284c33d89ebc4ab4ca6f759b9375ac9d3"],"products":["color-string_project:color-string"],"source":"nvd","synced_at":"2026-10-19T21:20:07.141963181+00:00"},"epss":{"cve":"CVE-2021-29060","score":0.03134,"percentile":0.87887,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-257v-vj4p-3w2h","url":"https://osv.dev/vulnerability/GHSA-257v-vj4p-3w2h","summary":"Regular Expression Denial of Service (ReDOS)","modified":"2023-11-08T04:05:32.674569Z","packages":[{"ecosystem":"npm","name":"color-string","purl":"pkg:npm/color-string","ranges":["<1.5.5"],"fixed":["1.5.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}