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Vulnerabilities

Vulnerability · 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 f

Published Feb 12, 2026 · catalog updated Feb 12, 2026 · Versions of the package

Last checked Nov 8, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-2327. EPSS is 0.73%. Act only if a listed version of Versions of the package is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Versions of the package).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.73%
Remediation
Version ranges on file
Affected products
vendor n/a markdown-it 13.0.0 <14.1.1

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 you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor n/a markdown-it 13.0.0 <14.1.113.0.0 <14.1.1

How to fix CVE-2026-2327

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-2327. EPSS is 0.73%. Act only if a listed version of Versions of the package is installed.

Which versions are affected?

Compare what you have installed with n/a markdown-it 13.0.0 <14.1.1 13.0.0 <14.1.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.73%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 12, 2026 · EUVD

    Detected

    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.

  2. Feb 12, 2026 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-2327

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-2327

    30-day exploitation probability 0.73%

    first.org
  • EUVDVulnerability recordEUVD-2026-7037

    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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 8, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 8, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 3, 2026