CVE-2026-2327CWE-1333

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…

Medium · published February 12, 2026

CVSS v4.0
6.9
EPSS
1%
Percentile
54.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00739 · 54.0th percentile
Weakness
CWE-1333 · Inefficient Regular Expression Complexity
Published
2026-02-12T05:00Z
EPSS history
Timeline
  • 12 FEB 05:00Z
    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…
    cvelistv5