PT-2026-60712 · Themeatelier · Chathelp – Click To Chat Button

Prism · CVE-2026-15759 · Published 2026-07-17 · Updated 2026-07-17

Mitre

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

The ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'number' and 'group' Shortcode Attributes in all versions up to, and including, 3.5.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-15759

Affected Products

Chathelp – Click To Chat Button

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-15759 · Security Note
• https://plugins.trac.wordpress.org/browser/chat-help/tags/3.5.1/src/Frontend/Shortcode/CustomButtonsTemplates.php#L66 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/c3ec4978-0d51-4ca1-b0cf-81aaa4d43f7b?source=cve · Note
• https://plugins.trac.wordpress.org/browser/chat-help/tags/3.5.1/src/Includes/ChatHelp.php#L192 · Note
• https://plugins.trac.wordpress.org/browser/chat-help/tags/3.5.1/src/Frontend/Shortcode/CustomButtonsTemplates.php#L138 · Note
• https://plugins.trac.wordpress.org/browser/chat-help/tags/3.5.1/src/Frontend/Shortcode/CustomShortcode.php#L38 · Note
• https://plugins.trac.wordpress.org/browser/chat-help/tags/3.5.1/src/Frontend/Shortcode/CustomButtonsTemplates.php#L76 · Note
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3609732%40chat-help&new=3609732%40chat-help · Note