Vulnerability library
Security checkFebruary 13, 2026

markdown-it is has a Regular Expression Denial of Service (ReDoS)

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Medium severitynpmmarkdown-it

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Description

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.

Recommendation

Update the markdown-it package to the latest compatible version. Followings are version details:

  • Affected version(s): >= 13.0.0, < 14.1.1
  • Patched version(s): 14.1.1

References

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See something that needs correcting? Let us knowUpdated February 13, 2026