Medium severity · published Jan 21, 2026
CVE-2026-20109
Cisco Packaged Contact Center Enterprise and Cisco Unified Contact Center Enterprise Cross-Site Scripting Vulnerability
4.8
CVSS
0.2%
EPSS
No
On KEV
Description
Multiple vulnerabilities in the web-based management interface of Cisco Packaged Contact Center Enterprise (Packaged CCE) and Cisco Unified Contact Center Enterprise (Unified CCE) could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device.
These vulnerabilities exist because the web-based management interface does not properly validate user-supplied input. An attacker could exploit these vulnerabilities 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. To exploit these vulnerabilities, the attacker must have valid administrative credentials.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 11% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CP
Cisco Packaged Contact Center Enterprise · Cisco
12.5(1); 11.0(1); 12.0(1); 11.0(2); 11.5(1); 10.5(1); +9 more · source: vendor
CU
Cisco Unified Contact Center Enterprise · Cisco
12.6(1)ES3; 12.6(1)ES1; 12.6(1); 12.6(1)ES2; 12.6(1)SecurityPatch; 12.5(1)ES1; +17 more · source: vendor
Affected product
CP
Cisco Packaged Contact Center Enterprise
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20109
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20109
sec.cloudapps.cisco.com
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucce-pcce-xss-2JVyg3uD
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