Vulnerabilities / Joinchat / WPSEC-2026-0886
Joinchat <= 6.4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Joinchat Button Block 'message' Attribute
Medium 6.4
CWE-79Fixed in 6.4.2
- ID
- WPSEC-2026-0886
- Plugin
- Joinchat – Enhanced “click to chat” (creame-whatsapp-me)
- Affected
- from 6.3.2 before 6.4.2
- Remediation
- Update to 6.4.2 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin High · Affected versions High among sites WPSec scans, 2026-10-14
- Attack surface
- Joinchat on WPSec AttackSurface
- Fix released
- Published
Description
The Joinchat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'message' attribute of the Joinchat Button block in all versions up to, and including, 6.4.1 due to insufficient output escaping when the value is placed in the button's data-message HTML attribute. 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.
References
- https://wpsec.com/vuln/WPSEC-2026-0886/
- https://plugins.svn.wordpress.org/creame-whatsapp-me/tags/6.4.2/
- https://wordpress.org/plugins/creame-whatsapp-me/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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