CVE-2026-46389
CWE-287Published: June 5, 2026· Updated: Jun 5, 2026
Official 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.
Risk Analysis
This critical vulnerability in UDS Identity Config allows an attacker to bypass authentication for Keycloak clients. A logic error causes the submitted client secret to be overwritten, enabling unauthorized access to OAuth2 tokens. With a CVSS score of 10.0, this flaw is extremely severe and should be addressed immediately.
No public exploit is currently known for this vulnerability. However, its remote exploitability (AV:N) and low attack complexity make it a significant concern.
Upgrade UDS Identity Config to version 0.26.1 or later to patch this issue. Ensure all Keycloak clients are configured securely and monitor for any suspicious authentication attempts.
Technical Analysis
CVE-2026-46389 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 10.0.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
All References (2)
Quick Facts
Related CVEs (CWE-287)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-46389 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts