CVE-2026-20116 Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities
Unauthenticated attackers can inject malicious scripts into Cisco Contact Center web interfaces, 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-2026-20116?
CVE-2026-20116 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 Finesse, Cisco Packaged Contact Center Enterprise (Packaged CCE), Cisco Unified Contact Center Enterprise (Unified CCE), Cisco Unified Contact Center Express (Unified CCX), and Cisco Unified Intelligence Center 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-2026-20116?
How do I fix CVE-2026-20116?
No fix has been published for CVE-2026-20116 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-2026-20116 being exploited?
There is no known exploitation of CVE-2026-20116 in the wild and no public exploit code.
Sources
Also known as GHSA-vh2r-jfvr-qvg8.