MEDIUM5.3
GHSA-38c4-r59v-3vqw
markdown-it is has a Regular Expression Denial of Service (ReDoS)
Quick fix
GHSA-38c4-r59v-3vqw — markdown-it: upgrade to the fixed version with the command below.
npm install markdown-it@14.1.1Details
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.
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-2327[ADVISORY]
- https://github.com/markdown-it/markdown-it/commit/4b4bbcae5e0990a5b172378e507b33a59012ed26[WEB]
- https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917[WEB]
- https://github.com/markdown-it/markdown-it[PACKAGE]
- https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs#L33[WEB]
- https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750[WEB]