What the vulnerability does
01Description
The Meta-box GalleryMeta plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.0.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Explanation of Vulnerability in Simple Terms
02Summary
Meta-box GalleryMeta versions 3.0.1 and earlier contain a cross-site scripting (XSS) vulnerability. An authenticated administrator with high privileges can inject malicious scripts that affect other users or the site scope. The vulnerability requires high attack complexity and does not require user interaction from the victim. Low confidentiality and integrity impact.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers or affect site functionality.
Potential impact on your site
04Site Impact
An admin account could be compromised to inject scripts affecting other users or site behavior.
Conditions required to exploit
05Prerequisites
Attacker must be an authenticated administrator or high-privilege user with network access.
Key dates
06Disclosure timeline
January 24, 2026
CVE published
April 8, 2026
Record updated
