Five9 vulnerabilities

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Published CVEs affecting Five9 products: 1 record(s), with severity, exploitation and fixes.

Five9 Live Chat 1

Exploited only (KEV) →

CVE-2025-11829 Medium · 6.4 CWE-79 Nov 11, 2025

Five9 Live Chat <= 1.1.2 - Authenticated (Contributor+) Stored Cross-Site Scripting

The Five9 Live Chat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'toolbar' attribute of the [five9-chat] shortcode in all versions up to, and including, 1.1.2. This is due to insufficient input sanitization and output escaping. 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.