CVE-2026-2327

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917	Vendor Advisory
https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs%23L33	Broken Link
https://github.com/markdown-it/markdown-it/commit/4b4bbcae5e0990a5b172378e507b33a59012ed26	Patch Product
https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750	Third Party Advisory
https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917	Vendor Advisory
https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:markdown-it_project:markdown-it:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-12 06:16

Updated : 2026-02-23 14:08

NVD link : CVE-2026-2327

Mitre link : CVE-2026-2327

CVE.ORG link : CVE-2026-2327

JSON object : View

Products Affected

markdown-it_project

markdown-it

CWE

CWE-1333

Inefficient Regular Expression Complexity

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