Stored Cross-Site Scripting Vulnerability in Meta-box GalleryMeta Plugin for WordPress

CVE-2026-1302

What is CVE-2026-1302?

The Meta-box GalleryMeta plugin for WordPress is susceptible to a Stored Cross-Site Scripting vulnerability that affects all versions up to and including 3.0.1. This issue arises from inadequate input sanitization and output escaping within the admin settings. Authenticated attackers with at least editor-level permissions can exploit this vulnerability to inject harmful web scripts into pages. These malicious scripts will be executed when any user accesses the compromised page. Notably, the vulnerability impacts multi-site installations and those instances where the unfiltered_html option has been disabled, increasing the risk of exploitation.

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