EUVD-2026-20103
GHSA-3q32-77vq-vq6v
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
3Description
The WP Blockade plugin for WordPress is vulnerable to Missing Authorization in all versions up to and including 0.9.14. The plugin registers an admin_post action hook 'wp-blockade-shortcode-render' that maps to the render_shortcode_preview() function. This function lacks any capability check (current_user_can()) and nonce verification, allowing any authenticated user to execute arbitrary WordPress shortcodes. The function takes a user-supplied 'shortcode' parameter from $_GET, passes it through stripslashes(), and directly executes it via do_shortcode(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes, which could lead to information disclosure, privilege escalation, or other impacts depending on what shortcodes are registered on the site (e.g., shortcodes from other plugins that display sensitive data, perform actions, or include files).
Analysis
WP Blockade WordPress plugin versions up to 0.9.14 allows authenticated users with Subscriber-level access or higher to execute arbitrary WordPress shortcodes due to missing authorization checks and nonce verification in the render_shortcode_preview() function. An attacker can supply malicious shortcodes via the 'wp-blockade-shortcode-render' admin_post action to achieve information disclosure, privilege escalation, or arbitrary actions depending on registered shortcodes. …
Sign in for full analysis, threat intelligence, and remediation guidance.
Priority Score
Share
External POC / Exploit Code
Leaving vuln.today