The The Special Text Boxes plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 6.2.4. This is due to the plugin adding the filter add_filter('comment_text', 'do_shortcode'); which will run all shortcodes in comments. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.
Severity
CVSS 3.1
7.3 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS
0.6% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)