
Keycloak vs Auth0 in 2026: What CTOs Need to Know Before Deciding
Okta acquired Auth0 in 2021 and raised prices. Many companies are now reconsidering their identity stack. Here's the unbiased comparison you need to make the right call.
Thoughts on Identity & Access Management, Keycloak, and engineering.

Okta acquired Auth0 in 2021 and raised prices. Many companies are now reconsidering their identity stack. Here's the unbiased comparison you need to make the right call.

We work with Keycloak every day. That doesn't mean it's the right choice for everyone — but it does mean we know exactly when it is.

Keycloak 26.6.0 is a feature release. Five capabilities — JWT Authorization Grant, Federated Client Auth, Workflows, Zero-Downtime Patches, and a new Test Framework — graduate from preview to fully supported.
Keycloak 26.2.x with FGAPv2 enabled is affected by a privilege escalation allowing manage-users admins to self-assign realm-admin.
Keycloak security advisory: phishing attack via email verification in first login flow. Affects all versions before 26.2.6, 26.1.5 and 26.0.10.