Markdown-It

5 CVEs across 2 Markdown-It products. Browse Markdown-It vulnerabilities, severities, and proof-of-concept exploits.

Markdown-It products with known CVEs

ProductCVEs
Markdown-It3
Linkify-It2
Markdown-It CVEs — newest first
CVESeverityScorePublishedSummary
CVE-2026-48801High7.52026-07-14linkify-it is a links recognition library with full Unicode support. Prior to 5.0.1, LinkifyIt.prototype.match, the package's primary public API, has O(N²) alg…
CVE-2026-59887High7.52026-07-08linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test() and .match() can be invoked a…
CVE-2026-48988Medium5.32026-06-17markdown-it is a Markdown parser. Versions 14.1.1 and below contain a denial-of-service vulnerability when typographer: true is enabled, due to quadratic (O(n^…
CVE-2025-7969Medium6.12025-08-21Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in markdown-it allows Cross-Site Scripting (XSS). Thi…
CVE-2022-21670Medium5.32022-01-10markdown-it is a Markdown parser. Prior to version 1.3.2, special patterns with length greater than 50 thousand characterss could slow down the parser signific…