What the vulnerability does
01Description
The Private Comment plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Label text' setting in all versions up to, and including, 0.0.4. This is due to insufficient input sanitization and output escaping on the plugin's label text option. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Explanation of Vulnerability in Simple Terms
02Summary
Private Comment versions 0.0.4 and earlier contain a cross-site scripting (XSS) vulnerability in how they handle user input. An attacker with high-level privileges can inject malicious scripts that affect other users or the site scope. The vulnerability requires specific attack conditions and does not allow code execution or data theft, but can compromise user sessions or deface content.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers or affect site functionality.
Potential impact on your site
04Site Impact
Privileged accounts could be compromised to inject malicious content affecting other users or site behavior.
Conditions required to exploit
05Prerequisites
Attacker must have high-level site privileges; no user interaction required from victims.
Key dates
06Disclosure timeline
February 18, 2026
CVE published
April 8, 2026
Record updated
