Medium severity6.4NVD Advisory· Published Jan 30, 2025· Updated Apr 8, 2026

CVE-2024-12451

Description

The HTML5 chat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'HTML5CHAT' shortcode in all versions up to, and including, 1.07 due to insufficient input sanitization and output escaping on user supplied attributes. 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.

Affected products

Proxymis/Html5 Chat
cpe:2.3:a:proxymis:html5_chat:*:*:*:*:*:wordpress:*:*
Range: <=1.04

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

plugins.trac.wordpress.org/browser/html5-chat/trunk/index.phpnvdPatch
www.wordfence.com/threat-intel/vulnerabilities/id/98de0a50-8464-4ea6-bf55-add9aab2d716nvdThird Party Advisory
plugins.trac.wordpress.org/changeset/3443134/nvd

News mentions

No linked articles in our index yet.

cvss	0.416
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000