AIKIDO-2026-89054
keycloak-services is vulnerable to Authentication Bypass
91
Critical Risk
This Affects:
keycloak-servicesTL;DR
keycloak-services tracks reset-credentials flow progress with an AUTHENTICATION_SELECTOR_SCREEN_DISPLAYED auth note and lets the reset-email authenticator succeed without a matching email action token. An unauthenticated caller who knows a username can make a request to the reset-credentials endpoint and skip email verification, landing on the password-update step. Before the fix this lets the caller set a new password for any user. The fix binds the selector note to the current execution ID and rejects reset email actions that lack a matching token.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and the Forgot password feature is enabled.
Background info
keycloak-services is vulnerable to Authentication Bypass in versions 26.0.0 - 26.7.1.
How to fix this
Upgrade the org.keycloak:keycloak-services library to the patch version.
Links
GitHub Release
Other
access.redhat.com/errata/RHSA-2026:56519access.redhat.com/errata/RHSA-2026:56520access.redhat.com/errata/RHSA-2026:56523access.redhat.com/errata/RHSA-2026:56524access.redhat.com/security/cve/CVE-2026-18963bugzilla.redhat.com/show_bug.cgi?id=2511595
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