What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in GalleryCreator SimpLy Gallery simply-gallery-block allows Stored XSS.This issue affects SimpLy Gallery: from n/a through <= 3.3.2.1.
Explanation of Vulnerability in Simple Terms
02Summary
SimpLy Gallery versions 3.3.2.1 and earlier contain a cross-site scripting (XSS) vulnerability that allows an authenticated attacker to inject malicious scripts. The vulnerability requires user interaction—typically clicking a crafted link—and can affect other users viewing the same page. An attacker with low privileges can inject code that steals session data or performs actions on behalf of other users.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in other users' browsers and steals their session data or performs actions on their behalf.
Potential impact on your site
04Site Impact
Authenticated users can be tricked into running attacker code, risking account compromise and unauthorized actions across your site.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account on the site; victim must click a crafted link or visit an attacker-controlled page.
Key dates
06Disclosure timeline
December 9, 2025
CVE published
April 28, 2026
Record updated