WP Blockade <= 0.9.14 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Shortcode Execution via 'shortcode' Parameter

Wordfence Intelligence > Vulnerability Database > WP Blockade <= 0.9.14 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Shortcode Execution via 'shortcode' Parameter

6.5

Missing Authorization

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVE	CVE-2026-3480
CVSS	6.5 (Medium)
Publicly Published	April 7, 2026
Last Updated	April 8, 2026
Researcher	theviper17y

Description

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).

References

Vulnerability Details for WP Blockade – Visual Page Builder

WP Blockade – Visual Page Builder

Software Type	Plugin
Software Slug	wp-blockade (view on wordpress.org)
Patched?	No
Remediation	No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Affected Version	<= 0.9.14

Recent vulnerabilities in WP Blockade – Visual Page Builder

WP Blockade <= 0.9.14 - Reflected Cross-Site Scripting via 'shortcode' Parameter

6.1

CVE-2026-3481

May 21, 2026

Researcher: theviper17y

#	Title	CVE ID	CVSS	Researchers	Date
1	WP Blockade <= 0.9.14 - Reflected Cross-Site Scripting via 'shortcode' Parameter	CVE-2026-3481	6.1	theviper17y	May 21, 2026

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