CVE-2026-2327: Markdown-It Project Markdown-It

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Markdown-It Project Markdown-It: from 13.0.0, before 14.1.1 (fixed in 14.1.1)

Published 2026-02-12. Last modified 2026-06-17.