What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Lester Chan WP-ShowHide wp-showhide allows Stored XSS.This issue affects WP-ShowHide: from n/a through <= 1.05.
Explanation of Vulnerability in Simple Terms
02Summary
WP-ShowHide versions 1.05 and earlier contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. An attacker with low-level site access can craft a request that, when visited by another user, executes arbitrary JavaScript in their browser. This can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim.
What an attacker can do
03Attacker Capabilities
Inject and execute malicious JavaScript in other users' browsers to steal sessions, credentials, or perform unauthorized actions.
Potential impact on your site
04Site Impact
Authenticated attackers can compromise other users' accounts or perform actions as those users; site administrators are at higher risk.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege site account and the victim must visit a page containing the malicious payload.
Key dates
06Disclosure timeline
December 9, 2025
CVE published
April 28, 2026
Record updated