CVE-2026-46389

Critical · CVSS 10.0

uds-identity-config — Authentication Bypass via Logic Error in Client Secret Comparison (CWE-287, CWE-303)

CVSS: 10.0; nvd
EPSS: —
KEV: No
Class: other; CWE-287, CWE-303

Description

UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS Core's Identity deployment. In versions 0.11.0 through 0.26.0, a logic error in the `client-kubernetes-secret` Keycloak client authenticator (shipped by `uds-identity-config` and consumed by UDS Core) causes the submitted `client_secret` to be overwritten with the mounted Kubernetes secret before comparison. An attacker who can reach the Keycloak token endpoint and knows a `client_id` using this authenticator can authenticate as that client with any `client_secret` value and obtain OAuth2 tokens scoped to the client's service account. In the case of the `uds-operator` client this token can be used to registry/modify other clients. Version 0.26.1 patches the issue.

Search profile — drives PoC discovery

Symbols client-kubernetes-secretclient_secretclient_iduds-operatorKubernetesSecretAuthenticatorclientSecretOverwritetoken endpointrealmtruststore

Keywords CVE-2026-46389uds-identity-configKeycloak client authenticator bypassclient-kubernetes-secret authenticatorGHSA-8mg2-6588-r4hwUDS Core identity authentication bypassclient_secret overwriteuds-operator tokenKeycloak authentication logic errordefenseunicorns uds-identity-config

Versions: 0.11.0 through 0.26.0

References

Status: enriched · ingested 2026-06-16T00:00:58.000Z · profiled 2026-06-16T18:20:23.035Z