CVE-2026-8420BLOGCHAT Chat System <= 1.3.6.3 - Cross-Site Request Forgery to Stored Cross-Site Scripting via Settings Update
Updated under an hour ago ()
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It affects rdbeach BLOGCHAT Chat System. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-352
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- May 20, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
rdbeach BLOGCHAT Chat System rdbeach:blogchat_chat_system (from the name) | through 1.3.6.3 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a62186aa-19aa-445b-8fdc-b029bdafd58f?source=cve
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.php#L208
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.php#L208
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.php#L215
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.php#L215
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.php#L222
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.php#L222
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/trunk/wp-blogchat-widget.php#L293
- https://plugins.trac.wordpress.org/browser/blogchat-chat-system/tags/1.3.6.3/wp-blogchat-widget.php#L293
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.