CVE-2026-3423CWE-79cross-site-scripting

CVE-2026-3423

Medium · published August 28, 2026

CVSS v3.1
6.4
EPSS
0%
Percentile
25.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00331 · 25.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-28T20:17Z
References (5)
https://plugins.trac.wordpress.org/browser/envira-gallery-lite/trunk/includes/global/rest.php#L192 · [email protected]https://plugins.trac.wordpress.org/browser/envira-gallery-lite/trunk/includes/global/rest.php#L239 · [email protected]https://plugins.trac.wordpress.org/browser/envira-gallery-lite/trunk/includes/global/shortcode.php#L807 · [email protected]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 · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/17de5b96-7a61-4f37-a921-6a023cc40812?source=cve · [email protected]
EPSS history
Timeline
  • 30 AUG 16:17Z
    EPSS moved — → 0%
    epss
  • 28 AUG 11:29Z
    Envira Gallery <= 1.12.4 - Authenticated (Author+) Stored Cross-Site Scripting via Gallery Description
    cvelistv5