Medium severity · published Mar 4, 2026
CVE-2026-1236
Envira Gallery for WordPress <= 1.12.3 - Authenticated (Author+) Stored Cross-Site Scripting via 'justified_gallery_theme' Parameter via REST API
6.4
CVSS
0.2%
EPSS
No
On KEV
Description
The Envira Gallery for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'justified_gallery_theme' parameter in all versions up to, and including, 1.12.3 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 an injected page.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EG
Envira Gallery – Image Photo Gallery, Albums, Video Gallery, Slideshows & More · smub
through 1.12.3 · source: vendor
Affected product
EG
Envira Gallery – Image Photo Gallery, Albums, Video Gallery, Slideshows & More
smub
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1236
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1236
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/envira-gallery-lite/tags/1.12.3/includes/global/shortcode.php#L302
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/envira-gallery-lite/trunk/includes/global/shortcode.php#L302
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3465371%40envira-gallery-lite&old=3444965%40envira-gallery-lite&sfp_email=&sfph_mail=
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/bc552d46-79ca-4540-8620-5a031238cd62?source=cve
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