PT-2026-49082 · Fooplugins · Photo Gallery By Foogallery : Responsive Image Gallery

Dmitry Ignatyev · Published 2026-06-13 · Updated 2026-06-13 · CVE-2026-9134

Mitre

CVSS v3.1

6.4

Medium

Base vector

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

The FooGallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'custom attribute key' shortcode parameter in versions up to, and including, 3.1.31 This is due to an incomplete JavaScript event handler blacklist in the foogallery sanitize javascript() function, which blocks only a subset of HTML event attributes (onmouseover, onmouseout, onpointerenter, onclick, onload, onchange, onerror) while permitting others such as 'onmouseenter', combined with the failure to escape the attribute key when building the gallery container HTML in foogallery build container attributes safe(). 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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-9134

Affected Products

Photo Gallery By Foogallery : Responsive Image Gallery

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-9134 · Security Note
• https://plugins.trac.wordpress.org/browser/foogallery/trunk/includes/functions.php#L480 · Note
• https://plugins.trac.wordpress.org/changeset/3542524/foogallery/tags/3.1.32/includes/functions.php?old=3535930&old_path=foogallery%2Ftags%2F3.1.31%2Fincludes%2Ffunctions.php · Note
• https://plugins.trac.wordpress.org/browser/foogallery/trunk/includes/functions.php#L1516 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/dd9650e6-7c3c-4510-9749-a3503924855f?source=cve · Note
• https://plugins.trac.wordpress.org/browser/foogallery/trunk/includes/class-gallery-advanced-settings.php#L148 · Note