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CVE-2025-11829

MEDIUM 6.4 CVSS 3.1
Published
November 11, 2025
Last modified
October 18, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • five9 Five9 Live Chat — Up to and including 1.1.2

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/five9/tags/1.1.2/includes/class-widget.php#L151
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/28548108-a004-4aeb-a0ad-269a73a71331?source=cve
  • nvd.nist.gov Official NVD record