PT-2026-50649 · Contrid · Slideshow Gallery Lite

Athiwat Tiprasaharn · Published 2026-06-18 · Updated 2026-06-18 · CVE-2026-2021

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 Slideshow Gallery LITE plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'alwaysauto' shortcode attribute in all versions up to, and including, 1.8.5. This is due to insufficient input sanitization and output escaping on user-supplied attributes. 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-2026-2021

Affected Products

Slideshow Gallery Lite

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-2021 · Security Note
• https://plugins.trac.wordpress.org/browser/slideshow-gallery/tags/1.8.5/views/default/gallery.php#L192 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/55d842fc-a750-4b59-a1d6-b3bd427dfe79?source=cve · Note
• https://plugins.trac.wordpress.org/browser/slideshow-gallery/tags/1.8.5/slideshow-gallery.php#L558 · Note
• https://plugins.trac.wordpress.org/browser/slideshow-gallery/trunk/views/default/gallery.php#L192 · Note
• https://plugins.trac.wordpress.org/browser/slideshow-gallery/trunk/slideshow-gallery.php#L558 · Note
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3567787%40slideshow-gallery&new=3567787%40slideshow-gallery&sfp_email=&sfph_mail= · Note