CRITICALVulnerability
Verified
Global

NVD CRITICAL: CVE-2026-20184 — A vulnerability in the integration of single sign-on (SSO) with Control Hub in C...

·Source: NIST NVD

Updated:

Executive Summary

A vulnerability in the integration of single sign-on (SSO) with Control Hub in Cisco Webex Services could have allowed an unauthenticated, remote attacker to impersonate any user within the service. This vulnerability existed because of improper certificate validation. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by connecting to a service end

Analysis

A vulnerability in the integration of single sign-on (SSO) with Control Hub in Cisco Webex Services could have allowed an unauthenticated, remote attacker to impersonate any user within the service. This vulnerability existed because of improper certificate validation. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by connecting to a service endpoint and supplying a crafted token. A successful exploit could have allowed the attacker to gain unauthorized access to legitimate Cisco Webex services. CVSS Score: 9.8. Published: 2026-04-15T17:17:03.677.

Indicators of Compromise (1)

CVE (1)
CVE-2026-20184
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Apr 15, 2026. Verified by: NIST.

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