CVE-2023-20096: Cisco Unified Contact Center Express Stored Cross-Site Scripting Vulnerability

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-04-05 · updated 2026-06-17
Weakness: CWE-79

Description

A vulnerability in the web-based management interface of Cisco Unified Contact Center Express (Unified CCX) could allow an authenticated, remote attacker to perform a stored cross-site scripting (XSS) attack. This vulnerability is due to insufficient input validation of user-supplied data. An attacker could exploit this vulnerability by entering crafted text into various input fields within the web-based management interface. A successful exploit could allow the attacker to perform a stored XSS attack, which could allow the execution of scripts within the context of other users of the interface.

Affected products

Cisco Unified Contact Center Express: before 12.5\(1\)su3 — fixed in 12.5\(1\)su3

How to fix

Upgrade to a fixed version: Cisco Unified Contact Center Express 12.5\(1\)su3. Check the vendor advisory for mitigations.

References

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