CVE-2026-18964: Floating Chat Widget: Contact Chat Icons, Telegram Chat, Line Messenger, WeChat, Email, SMS, Call Button <= 3.5.9 - Reflected Cross-Site Scripting
The Floating Chat Widget: Contact Chat Icons, Telegram Chat, Line Messenger, WeChat, Email, SMS, Call Button – Chaty plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 's' parameter in all versions up to, and including, 3.5.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. WordPress's server-side HTML encoding of the 's' search parameter in the <title> element is bypassed because the browser DOM API decodes HTML entities when jQuery's .text() method reads document.title, returning literal special characters that are then embedded unescaped into the constructed HTML attribute value.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
WordPress plugin: Floating Chat Widget: Contact Chat Icons, Telegram Chat, Line Messenger, WeChat, Email, SMS, Call Button – Chatyto a version that resolves this vulnerability.Fixed in 3.5.9
Event History
Frequently Asked Questions
Who can exploit this issue, and what user interaction is required?
An unauthenticated attacker can attempt exploitation remotely. Successful script execution requires convincing a user to perform an action such as clicking an attacker-crafted link.
Which installations are affected?
All versions of the Chaty WordPress plugin up to and including 3.5.9 are affected. The issue is triggered through the s parameter.
What could an attacker achieve if exploitation succeeds?
The attacker can inject arbitrary web scripts that execute in the affected page context when the victim follows the crafted link. The reported impact includes limited confidentiality and integrity impact, with no availability impact.