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.
Metrics
Affected Vendors & Products
References
History
Thu, 16 Apr 2026 09:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Cisco
Cisco webex Meetings |
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| Vendors & Products |
Cisco
Cisco webex Meetings |
Wed, 15 Apr 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Wed, 15 Apr 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
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| Description | 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. | |
| Title | Cisco Webex Meetings Certificate Validation Vulnerability | |
| Weaknesses | CWE-295 | |
| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: cisco
Published: 2026-04-15T16:03:59.646Z
Updated: 2026-04-16T19:07:14.461Z
Reserved: 2025-10-08T11:59:15.394Z
Link: CVE-2026-20184
Updated: 2026-04-15T16:56:20.681Z
Status : Awaiting Analysis
Published: 2026-04-15T17:17:03.677
Modified: 2026-04-17T15:09:46.880
Link: CVE-2026-20184
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