{"id":"GHSA-38c4-r59v-3vqw","summary":"markdown-it is has a Regular Expression Denial of Service (ReDoS)","details":"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.","aliases":["CVE-2026-2327"],"modified":"2026-02-18T15:44:03.837597Z","published":"2026-02-12T06:30:13Z","related":["CGA-f3g2-68ff-2c28"],"database_specific":{"cwe_ids":["CWE-1333"],"nvd_published_at":"2026-02-12T06:16:02Z","github_reviewed_at":"2026-02-13T20:04:39Z","github_reviewed":true,"severity":"MODERATE"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2327"},{"type":"WEB","url":"https://github.com/markdown-it/markdown-it/commit/4b4bbcae5e0990a5b172378e507b33a59012ed26"},{"type":"WEB","url":"https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917"},{"type":"PACKAGE","url":"https://github.com/markdown-it/markdown-it"},{"type":"WEB","url":"https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs#L33"},{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750"}],"affected":[{"package":{"name":"markdown-it","ecosystem":"npm","purl":"pkg:npm/markdown-it"},"ranges":[{"type":"SEMVER","events":[{"introduced":"13.0.0"},{"fixed":"14.1.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-38c4-r59v-3vqw/GHSA-38c4-r59v-3vqw.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V4","score":"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"}]}