Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogcha
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogcha
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogcha
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogcha
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a62186aa-19aa-445b-8fd
FAQ
What is CVE-2026-8420?
CVE-2026-8420 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 funct...
How severe is CVE-2026-8420?
CVE-2026-8420 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-8420?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.