TI-2026-16330 Aliases CVE-2026-20117 GHSA-qmmg-85g8-7w47

Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities

LOW 27CWE-79Published 2026-03-11 · Updated 2026-03-11

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00249 16th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Unified Contact Center Express	10.5(1)SU1; 10.6(1); 11.6(1); 10.6(1)SU1; 10.6(1)SU3; 11.6(2); 12.0(1); 11.0(1)SU1; 11.5(1)SU1; 10.5(1); 12.5(1); 12.5(1)SU1; 12.5(1)SU2; 12.5(1)SU3; 12.5(1)_SU03_ES01; 12.5(1)_SU03_ES02; 12.5(1)_SU02_ES03; 12.5(1)_SU02_ES04; 12.5(1)_SU02_ES02; 12.5(1)_SU01_ES02; 12.5(1)_SU01_ES03; 12.5(1)_SU02_ES01; 11.6(2)ES07; 11.6(2)ES08; 12.5(1)_SU01_ES01; 12.0(1)ES04; 12.5(1)ES02; 12.5(1)ES03; 11.6(2)ES06; 12.5(1)ES01; 12.0(1)ES03; 12.0(1)ES01; 11.6(2)ES05; 12.0(1)ES02; 11.6(2)ES04; 11.6(2)ES03; 11.6(2)ES02; 11.6(2)ES01; 10.6(1)SU3ES03; 11.0(1)SU1ES03; 10.6(1)SU3ES01; 10.5(1)SU1ES10; 11.5(1)SU1ES03; 11.6(1)ES02; 11.5(1)ES01; 10.6(1)SU2; 10.6(1)SU2ES04; 11.6(1)ES01; 10.6(1)SU3ES02; 11.5(1)SU1ES02; 11.5(1)SU1ES01; 11.0(1)SU1ES02; 12.5(1)_SU03_ES03; 12.5(1)_SU03_ES04; 12.5(1)_SU03_ES05; UCCX 15.0.1; 12.5(1)_SU03_ES06; 12.5(1)_SU03_ES07; 15.0(1); 15.0(1)ES01; 15.0(1)ES-MSOauth; 1501_ES01_CSCws06843	—	No fix listed	CNA

Cisco Unified Contact Center Express VendorCisco Affected 10.5(1)SU1; 10.6(1); 11.6(1); 10.6(1)SU1; 10.6(1)SU3; 11.6(2); 12.0(1); 11.0(1)SU1; 11.5(1)SU1; 10.5(1); 12.5(1); 12.5(1)SU1; 12.5(1)SU2; 12.5(1)SU3; 12.5(1)_SU03_ES01; 12.5(1)_SU03_ES02; 12.5(1)_SU02_ES03; 12.5(1)_SU02_ES04; 12.5(1)_SU02_ES02; 12.5(1)_SU01_ES02; 12.5(1)_SU01_ES03; 12.5(1)_SU02_ES01; 11.6(2)ES07; 11.6(2)ES08; 12.5(1)_SU01_ES01; 12.0(1)ES04; 12.5(1)ES02; 12.5(1)ES03; 11.6(2)ES06; 12.5(1)ES01; 12.0(1)ES03; 12.0(1)ES01; 11.6(2)ES05; 12.0(1)ES02; 11.6(2)ES04; 11.6(2)ES03; 11.6(2)ES02; 11.6(2)ES01; 10.6(1)SU3ES03; 11.0(1)SU1ES03; 10.6(1)SU3ES01; 10.5(1)SU1ES10; 11.5(1)SU1ES03; 11.6(1)ES02; 11.5(1)ES01; 10.6(1)SU2; 10.6(1)SU2ES04; 11.6(1)ES01; 10.6(1)SU3ES02; 11.5(1)SU1ES02; 11.5(1)SU1ES01; 11.0(1)SU1ES02; 12.5(1)_SU03_ES03; 12.5(1)_SU03_ES04; 12.5(1)_SU03_ES05; UCCX 15.0.1; 12.5(1)_SU03_ES06; 12.5(1)_SU03_ES07; 15.0(1); 15.0(1)ES01; 15.0(1)ES-MSOauth; 1501_ES01_CSCws06843 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:unified_contact_center_express::::::::	up to 15.0\(1\)ES01	Vulnerable	Cisco

cpe:2.3:a:cisco:unified_contact_center_express:*:*:*:*:*:*:*:* Versions up to 15.0\(1\)ES01 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-20117
2026-10-03 Alias added: GHSA-qmmg-85g8-7w47

References

Advisory 1

cisco-sa-cc-xss-MrNAH5Jh

TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
TI-2020-02838 Cisco Unified Contact Center Express Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
TI-2018-00362 Cross-site scripting in Cisco Unified Contact Center Express unknown CVSS 3.0CRITICAL 9.8
TI-2024-13188 Deserialization of untrusted data in Cisco Unified Contact Center Enterprise CVSS 3.1CRITICAL 10.0
TI-2025-14653 Cisco Unified Contact Center Express Editor Authentication Bypass Vulnerability CVSS 3.1CRITICAL 9.8
TI-2017-09109 Improper authentication in Cisco Voice Operating System CVSS 3.0CRITICAL 9.8

See all 47 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences