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OpenAdvisories
Medium · 6.4 CVE-2024-12451 EUVD-2024-50868GHSA-wrf2-7gmj-mf6g

HTML5 chat <= 1.07 - Authenticated (Contributor+) Stored Cross-Site Scripting

Published Jan 30, 2025 · Updated Apr 8, 2026 · Assigned by Wordfence

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

VendorProductAffectedFixed
proxymis HTML5 Chat ≤ 1.07 —

References