CVE-2026-20117 Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities
Unauthenticated attackers can inject malicious scripts into the Cisco Unified CCX web interface, allowing arbitrary code execution or data theft in user browsers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-20117?
CVE-2026-20117 is a medium-severity cross-site scripting vulnerability in Cisco Unified Contact Center Express, published on 11 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A vulnerability in the web-based management interface of Cisco Unified Contact Center Express (Unified CCX) could allow an unauthenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface. This vulnerability exists because the web-based management interface of an affected system does not sufficiently validate user-supplied input. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.
Weakness: CWE-79
Which versions are affected by CVE-2026-20117?
It affects 1 product.
Products include Cisco Unified Contact Center Express.
How do I fix CVE-2026-20117?
No fix has been published for CVE-2026-20117 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-20117 being exploited?
There is no known exploitation of CVE-2026-20117 in the wild and no public exploit code.
Other vulnerabilities in Cisco Unified Contact Center Express
- CVE-2025-20354 Cisco Unified Contact Center Express Remote Code Execution Vulnerability
- CVE-2020-3280 Cisco Unified Contact Center Express Remote Code Execution Vulnerability
- CVE-2018-0403 Information disclosure in Cisco Unified Contact Center Express unknown
- CVE-2022-20658 Privilege escalation in Cisco Unified Contact Center Domain Manager
- CVE-2025-20358 Cisco Unified Contact Center Express Editor Authentication Bypass Vulnerability
Sources
Also known as GHSA-qmmg-85g8-7w47.