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Advisory severityMedium4.8Cisco

Medium [CVE-2026-20055 +1] Cisco Packaged Contact Center Enterprise and Cisco Unified Contact Center Enterprise Cross-Site Scripting Vulnerabilities

This medium-severity Cisco advisory covers CVE-2026-20055 and CVE-2026-20109; related products: Unified Contact Center Enterprise, Packaged Contact Center Enterprise.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 2 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.

cisco-sa-ucce-pcce-xss-2JVyg3uD Source published Source updated

VulniPulse record published Record updated

CVE-2026-20055CVE-2026-20109
Related products & platforms
CiscoUnified Communications
Open source advisory

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Summary

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.

Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

Affected versions
  • Scope: At the time of publication, these vulnerabilities affected Cisco Packaged CCE and Cisco Unified CCE, regardless of device configuration.
  • Earlier than 12.6 — Migrate to a fixed release
  • 12.6 — 12.6(2)_ES101 / Migrate to a fixed release
  • Release 15.0 (first fixed: 15.0(1)ES202511)

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Fixed versions
  • 15.0(1)ES202511

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • 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.
Workaround status
  • There are no workarounds that address these vulnerabilities.

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

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