CVE-2025-11829

MEDIUM

Five9 Live Chat <= 1.1.2 - Authenticated Stored Cross-Site Scripting via Shortcode Toolbar Attribute

Title source: llm

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.

References (2)

Core 2

Core References

Product

https://plugins.trac.wordpress.org/browser/five9/tags/1.1.2/includes/class-widget.php#L151

Third Party Advisory

https://www.wordfence.com/threat-intel/vulnerabilities/id/28548108-a004-4aeb-a0ad-269a73a71331?source=cve

Scores

CVSS v3 6.4

EPSS 0.0020

EPSS Percentile 9.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (1)

five9/Five9 Live Chat < 1.1.2

Published Nov 11, 2025

Tracked Since Feb 18, 2026