What the vulnerability does
01Description
The TalkJS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 0.1.15 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions 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
TalkJS versions 0.1.15 and earlier contain a cross-site scripting vulnerability in how they handle user input. An attacker with high privileges can inject malicious scripts that affect other users or components. The vulnerability requires specific conditions to exploit and has limited impact on confidentiality and integrity.
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
Users may be exposed to malicious scripts if an admin or privileged account is compromised or misused.
Conditions required to exploit
05Prerequisites
Attacker must have high-level privileges in TalkJS and exploit requires specific attack conditions.
Key dates
06Disclosure timeline
February 19, 2026
CVE published
April 14, 2026
Record updated
