XSS in Five9 Live Chat
CVE-2025-11829
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…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (9.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Five9 Live Chat — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-11829?
- CVE-2025-11829 is a medium-severity vulnerability in Five9 Live Chat, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-11-11.
- How severe is CVE-2025-11829?
- Medium severity. CVSS v3 base score is 6.4 out of 10.