markdown-it is has a Regular Expression Denial of Service (ReDoS)
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 /\*+$/ in the linkify function. An attacker can supply a long sequence of * characters followed by a non-matching character, which triggers excessive backtracking and may lead to a denial-of-service condition.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-2327US | high7.5 | — | ||
Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\*+$/ in the linkify f… | ||||
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references
External citations — patches, advisories, analysis.
- https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917WEB
- https://github.com/markdown-it/markdown-itPACKAGE
- https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs#L33WEB
- https://github.com/markdown-it/markdown-it/commit/4b4bbcae5e0990a5b172378e507b33a59012ed26WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-2327ADVISORY
- https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750WEB
scry
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