CVE-2026-16104 — MEDIUM (4.3)

Vulnerability Description

A flaw was found in the authentication configuration endpoint of the keycloak-services component, which is the core engine for Red Hat Build of Keycloak identity and access management. The issue occurs because the system fails to mask sensitive configuration values, such as reCAPTCHA secret keys, when they are requested by administrators with view-only permissions. This can lead to the exposure of third-party service credentials to unauthorized personnel or through administrative logs.

CVSS Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Redhat	Build Of Keycloak	-

Related Weaknesses (CWE)

CWE-522

References

https://access.redhat.com/security/cve/CVE-2026-16104Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2501737Issue TrackingVendor Advisory

FAQ

What is CVE-2026-16104?

CVE-2026-16104 is a vulnerability with a CVSS score of 4.3 (MEDIUM). A flaw was found in the authentication configuration endpoint of the keycloak-services component, which is the core engine for Red Hat Build of Keycloak identity and access management. The issue occur...

How severe is CVE-2026-16104?

CVE-2026-16104 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-16104?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Build Of Keycloak.