{"cve":"CVE-2021-23490","nvd":{"published":"2021-12-24T20:15:08.013","modified":"2026-06-17T03:38:48.073","status":"Modified","description":"The package parse-link-header before 2.0.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the checkHeader function.","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:H","score":7.5},"cwes":["CWE-1333"],"references":["https://github.com/thlorenz/parse-link-header/commit/72f05c717b3f129c5331a07bf300ed8886eb8ae1","https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2321973","https://snyk.io/vuln/SNYK-JS-PARSELINKHEADER-1582783","https://github.com/thlorenz/parse-link-header/commit/72f05c717b3f129c5331a07bf300ed8886eb8ae1","https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2321973"],"products":["parse-link-header_project:parse-link-header"],"source":"nvd","synced_at":"2026-10-19T21:26:33.761856376+00:00"},"epss":{"cve":"CVE-2021-23490","score":0.01891,"percentile":0.79582,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-q674-xm3x-2926","url":"https://osv.dev/vulnerability/GHSA-q674-xm3x-2926","summary":"Uncontrolled Resource Consumption in parse-link-header","modified":"2025-01-14T09:11:59.688125Z","packages":[{"ecosystem":"npm","name":"parse-link-header","purl":"pkg:npm/parse-link-header","ranges":["<2.0.0"],"fixed":["2.0.0"]}]}],"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."]}