PT-2026-4598 · WordPress · Meta-Box Gallerymeta

Kazuma Matsumoto · Published 2026-01-24 · Updated 2026-01-24 · CVE-2026-1302

Positive Technologies (AI Summary)

CVSS v3.1

4.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Meta-box GalleryMeta plugin for WordPress versions up to and including 3.0.1

Description The Meta-box GalleryMeta plugin for WordPress is susceptible to Stored Cross-Site Scripting through admin settings. Insufficient input sanitization and output escaping allow authenticated attackers with editor-level permissions or higher to inject arbitrary web scripts into pages. These scripts will execute when a user accesses the injected page. This issue specifically impacts multi-site installations and those where unfiltered html has been disabled.

Recommendations Update the Meta-box GalleryMeta plugin to a version later than 3.0.1.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-1302

Affected Products

Meta-Box Gallerymeta

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2026-1302 · Security Note
• https://plugins.trac.wordpress.org/browser/meta-box-gallerymeta/tags/3.0.1/templates/single-mb_gallery.php#L31 · Note
• https://plugins.trac.wordpress.org/browser/meta-box-gallerymeta/tags/3.0.1/gallerymetaboxes.php#L119 · Note
• https://twitter.com/CVEnew/status/2014995763206689250 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2015049985515987107 · Twitter Post
• https://plugins.trac.wordpress.org/changeset/3446962 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/bb9ae252-7e5f-4dc0-a162-100493b81980?source=cve · Note
• https://plugins.trac.wordpress.org/browser/meta-box-gallerymeta/tags/3.0.1/gallerymetaboxes.php#L314 · Note
• https://t.me/CVEtracker/42936 · Telegram Post
• https://plugins.trac.wordpress.org/browser/meta-box-gallerymeta/tags/3.0.1/templates/single-mb_gallery.php#L33 · Note