What’s Vulnerable › Vulnerabilities

CVE-2025-10180: Markdown Shortcode <= 0.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-26 · updated 2026-10-11
• Weakness: CWE-79

Description

The Markdown Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'markdown' shortcode in all versions up to, and including, 0.2.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• jhoppe Markdown Shortcode: through 0.2.1

References

• https://github.com/JohannesHoppe/markdown-shortcode/releases/tag/v0.2.3
• https://plugins.trac.wordpress.org/browser/markdown-shortcode/trunk/markdown-shortcode.php#L40
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3365425%40markdown-shortcode&new=3365425%40markdown-shortcode&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/4e9563b8-7e1b-4e87-8b56-17b75adb66c3?source=cve
• https://github.com/JohannesHoppe/markdown-shortcode/commit/2f02cd680eb60cc7d4a92cc64506095d304a95ff

Get alerted when CVE-2025-10180 or the next vulnerability affects your stack