CVE-2026-4766

Description

The Easy Image Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Gallery shortcode post meta field in all versions up to, and including, 1.5.3. This is due to insufficient input sanitization and output escaping on user-supplied gallery shortcode values. 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.

References

• https://plugins.trac.wordpress.org/browser/easy-image-gallery/tags/1.5.3/includes/template-functions.php#L240
• https://plugins.trac.wordpress.org/browser/easy-image-gallery/trunk/includes/template-functions.php#L240
• https://www.wordfence.com/threat-intel/vulnerabilities/id/e7279f74-c2bd-4601-b8d5-0effe43705a5?source=cve