CVE-2021-20278

An authentication bypass vulnerability was found in Kiali in versions before 1.31.0 when the authentication strategy `OpenID` is used. When RBAC is enabled, Kiali assumes that some of the token validation is handled by the underlying cluster. When OpenID `implicit flow` is used with RBAC turned off, this token validation doesn't occur, and this allows a malicious user to bypass the authentication.

• CWE-290
• CWE-287

• https://bugzilla.redhat.com/show_bug.cgi?id=1937171Issue Tracking, Patch, Third Party Advisory
• https://kiali.io/news/security-bulletins/kiali-security-002/Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1937171Issue Tracking, Patch, Third Party Advisory
• https://kiali.io/news/security-bulletins/kiali-security-002/Vendor Advisory

Published

May 28, 2021

Last Modified

Jun 17, 2026

Status

Modified

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