Known vulnerabilities in Markup Markdown

Disable Wordpress's native Gutenberg or TinyMCE editor in favor of a Markdown editor.

3Reported vulnerabilities

6.4Highest CVSS score

3.25.1Latest version

1,000+Active installs

What to do now

Update Markup Markdown to 3.20.10 or later. 3 of these have a fixed version available. Updating resolves them.

Plugin last updated: November 28, 2025 / Tested up to WordPress: 6.8.8 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2025-9540	Medium 6.4	0.2%	3.20.9 and earlier	`3.20.10`	September 1, 2025
CVE-2025-9541	Medium 6.4	0.2%	3.20.9 and earlier	`3.20.10`	September 1, 2025
CVE-2025-49420	Medium 6.4	0.2%	3.20.6 and earlier	`3.20.7`	August 19, 2025

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.