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CVE-2026-2327

CVE-2026-2327

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 6.9 · Medium · EPSS 0.7% · Fix available

Published
Updated

Stack: system · node

Affected products and versions

  • markdown-it

    Versions
    • ≥ 13.0.0, < 14.1.1: Affected (semver)

    Update to 14.1.1

  • markdown-it npm

    Affected ranges
    • SEMVER: ≥ 13.0.0, < 14.1.1

    Update to 14.1.1

  • node-markdown-it Ubuntu:22.04:LTS

    Versions
    • 10.0.0+dfsg-2
    • 10.0.0+dfsg-3
    • 10.0.0+dfsg-3.1
    • 10.0.0+dfsg-4
    • 10.0.0+dfsg-5
    • 10.0.0+dfsg-6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-markdown-it Ubuntu:24.04:LTS

    Versions
    • 22.2.3+dfsg+~12.2.3-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-markdown-it Ubuntu:25.10

    Versions
    • 22.2.3+dfsg+~12.2.3-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-markdown-it Ubuntu:26.10

    Versions
    • 22.2.3+dfsg+~12.2.3-4
    • 22.2.3+dfsg+~12.2.3-5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-markdown-it Ubuntu:26.04:LTS

    Versions
    • 22.2.3+dfsg+~12.2.3-2
    • 22.2.3+dfsg+~12.2.3-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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