Medium severity6.1NVD Advisory· Published May 20, 2026· Updated May 20, 2026
CVE-2026-8420
CVE-2026-8420
Description
The BLOGCHAT Chat System plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.3.6.3. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Range: <=1.3.6.3
- Range: <=1.3.6.3
Patches
Vulnerability mechanics
References
9- plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.phpnvd
- plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.phpnvd
- plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.phpnvd
- plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.phpnvd
- plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.phpnvd
- plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.phpnvd
- plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.phpnvd
- plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.phpnvd
- www.wordfence.com/threat-intel/vulnerabilities/id/a62186aa-19aa-445b-8fdc-b029bdafd58fnvd
News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (May 18, 2026 to May 24, 2026)Wordfence Blog · May 28, 2026