{"cve":"CVE-2024-1899","nvd":{"published":"2024-02-26T19:15:07.037","modified":"2026-06-17T07:05:14.907","status":"Analyzed","description":"An issue in the anchors subparser of Showdownjs versions <= 2.1.0 could allow a remote attacker to cause denial of service conditions.","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-674"],"references":["https://www.tenable.com/security/research/tra-2024-05","https://www.tenable.com/security/research/tra-2024-05"],"products":["showdownjs:showdown"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2024-1899","score":0.00806,"percentile":0.56809,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rmmh-p597-ppvv","url":"https://osv.dev/vulnerability/GHSA-rmmh-p597-ppvv","summary":"Showdown vulnerable to Regular Expression Denial of Service (ReDoS) in link/anchor parsing","modified":"2026-09-10T03:50:09.886621379Z","packages":[{"ecosystem":"npm","name":"showdown","purl":"pkg:npm/showdown","ranges":["<=2.1.0"],"fixed":[]}]}],"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."]}