What’s Vulnerable › Vulnerabilities

CVE-2026-3423: Envira Gallery <= 1.12.4 - Authenticated (Author+) Stored Cross-Site Scripting via Gallery Description

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-28 · updated 2026-08-28
• Weakness: CWE-79

Description

The Envira Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the gallery 'description' configuration field in all versions up to, and including, 1.12.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses a page displaying the gallery with a description enabled.

Affected products

• smub Envira Gallery – Image Photo Gallery, Albums, Video Gallery, Slideshows & More: through 1.12.4

References

• https://plugins.trac.wordpress.org/browser/envira-gallery-lite/trunk/includes/global/rest.php#L192
• https://plugins.trac.wordpress.org/browser/envira-gallery-lite/trunk/includes/global/rest.php#L239
• https://plugins.trac.wordpress.org/browser/envira-gallery-lite/trunk/includes/global/shortcode.php#L807
• https://plugins.trac.wordpress.org/changeset/3514026/envira-gallery-lite/trunk/includes/global/shortcode.php?old=3465371&old_path=envira-gallery-lite%2Ftrunk%2Fincludes%2Fglobal%2Fshortcode.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/17de5b96-7a61-4f37-a921-6a023cc40812?source=cve

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