{"cve":"CVE-2026-2327","nvd":{"published":"2026-02-12T06:16:02.243","modified":"2026-06-17T10:30:47.550","status":"Analyzed","description":"Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\\*+$/ in the linkify function. An attacker can supply a long sequence of * characters followed by a non-matching character, which triggers excessive backtracking and may lead to a denial-of-service condition.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","score":5.5},"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://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917","https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs%23L33","https://github.com/markdown-it/markdown-it/commit/4b4bbcae5e0990a5b172378e507b33a59012ed26","https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750","https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917"],"products":["markdown-it_project:markdown-it"],"source":"nvd","synced_at":"2026-10-19T22:23:35.260773158+00:00"},"epss":{"cve":"CVE-2026-2327","score":0.00739,"percentile":0.54574,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-38c4-r59v-3vqw","url":"https://osv.dev/vulnerability/GHSA-38c4-r59v-3vqw","summary":"markdown-it is has a Regular Expression Denial of Service (ReDoS)","modified":"2026-09-10T03:50:33.896962866Z","packages":[{"ecosystem":"npm","name":"markdown-it","purl":"pkg:npm/markdown-it","ranges":[">=13.0.0 <14.1.1"],"fixed":["14.1.1"]}]}],"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."]}