{"id":"CVE-2026-2327","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":["GHSA-38c4-r59v-3vqw"],"modified":"2026-08-12T03:51:37.608238816Z","published":"2026-02-12T05:00:07.369Z","related":["CGA-f3g2-68ff-2c28"],"database_specific":{"cwe_ids":["CWE-1333"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2327.json","cna_assigner":"snyk"},"references":[{"type":"WEB","url":"https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917"},{"type":"WEB","url":"https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs%23L33"},{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2327.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2327"},{"type":"FIX","url":"https://github.com/markdown-it/markdown-it/commit/4b4bbcae5e0990a5b172378e507b33a59012ed26"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/markdown-it/markdown-it","events":[{"introduced":"6ec0b76ebe439f5858ae51d8e0cb45ee4a7ad46c"},{"fixed":"b4a9b659ef5734223731cfaa3ad5eacc6fc22918"},{"fixed":"4b4bbcae5e0990a5b172378e507b33a59012ed26"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:markdown-it_project:markdown-it:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"13.0.0"},{"fixed":"14.1.1"}]}}],"versions":["14.1.0","14.0.0","13.0.2","13.0.1","13.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-2327.json"}}],"schema_version":"1.9.0","severity":[{"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"}]}