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Advisory severityMedium6.1Cisco

Medium [CVE-2026-20170] Cisco Webex Contact Center Cross-Site Scripting Vulnerability

This medium-severity Cisco advisory covers CVE-2026-20170; related products: Webex Contact Center.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

cisco-sa-webexcc-xss-WEX5nUnA Source published Source updated

VulniPulse record published Record updated

CVE-2026-20170
Related products & platforms
CiscoUnified CommunicationsWebex
Open source advisory

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Summary

A vulnerability in the Desktop Agent functionality of Cisco Webex Contact Center could have allowed an unauthenticated, remote attacker to conduct cross-site scripting attacks. Cisco has addressed this vulnerability in the Cisco Webex Contact Center service, and no customer action is needed.

This vulnerability existed because HTML and script content was not properly handled. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by persuading a user to follow a malicious link.

A successful exploit could have allowed the attacker to steal sensitive information from the browser, including authentication and session information.

There are no workarounds that address this vulnerability.

Affected versions
  • Scope: This vulnerability affected Cisco Webex Contact Center, which is cloud based.

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

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

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

Mitigation checklist

Recommended fix / mitigation
  • A vulnerability in the Desktop Agent functionality of Cisco Webex Contact Center could have allowed an unauthenticated, remote attacker to conduct cross-site scripting attacks.
  • Cisco has addressed this vulnerability in the Cisco Webex Contact Center service, and no customer action is needed.
  • As mentioned, Cisco has addressed this vulnerability in the Cisco Webex Contact Center service, and no customer action is necessary to update on-premises software or devices.
Workaround status
  • There are no workarounds that address this vulnerability.

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

Discussion(0)

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