{"cve":"CVE-2021-23424","nvd":{"published":"2021-08-18T17:15:07.990","modified":"2026-06-17T03:38:44.290","status":"Modified","description":"This affects all versions of package ansi-html. If an attacker provides a malicious string, it will get stuck processing the input for an extremely long time.","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":[],"references":["https://github.com/Tjatse/ansi-html/issues/19","https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1567198","https://snyk.io/vuln/SNYK-JS-ANSIHTML-1296849","https://github.com/Tjatse/ansi-html/issues/19","https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1567198"],"products":["ansi-html_project:ansi-html"],"source":"nvd","synced_at":"2026-10-19T21:21:57.125947417+00:00"},"epss":{"cve":"CVE-2021-23424","score":0.01768,"percentile":0.78116,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-whgm-jr23-g3j9","url":"https://osv.dev/vulnerability/GHSA-whgm-jr23-g3j9","summary":"Uncontrolled Resource Consumption in ansi-html","modified":"2023-11-08T04:05:08.868477Z","packages":[{"ecosystem":"npm","name":"ansi-html","purl":"pkg:npm/ansi-html","ranges":["<0.0.8"],"fixed":["0.0.8"]}]}],"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."]}