Stored Cross-Site Scripting Vulnerability in Click to Chat Plugin for WordPress
CVE-2025-5336

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Click To Chat – Holithemes
Vendor
CVE Published:
14 June 2025

What is CVE-2025-5336?

The Click to Chat plugin for WordPress is exposed to a Stored Cross-Site Scripting vulnerability through the 'data-no_number' parameter. This flaw arises due to inadequate input sanitization and output escaping in all versions up to and including 4.22. Authenticated attackers with Contributor-level privileges or higher can exploit this vulnerability to inject malicious web scripts into pages, allowing those scripts to execute under the context of user access whenever an affected page is loaded.

Affected Version(s)

Click to Chat – HoliThemes * <= 4.22

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://wordpress.org/plugins/click-to-chat-for-whatsapp/...
https://plugins.trac.wordpress.org/browser/click-to-chat-...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Asaf Mozes
.
CVE-2025-5336 : Stored Cross-Site Scripting Vulnerability in Click to Chat Plugin for WordPress