CVE-2026-6246: Mkerstner Simple Random Posts Shortcode

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The Simple Random Posts Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'container_right_width' attribute of the 'simple_random_posts' shortcode in all versions up to, and including, 0.3 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

• Mkerstner Simple Random Posts Shortcode: up to and including 0.3

Published 2026-04-22. Last modified 2026-06-17.