CVE-2021-20278: Kiali

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

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.

Affected products

• Kiali Kiali: before 1.31.0 (fixed in 1.31.0)

Published 2021-05-28. Last modified 2026-06-17.