CVE-2026-16089

A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their own client, potentially allowing them to obtain access tokens for a victim's identity.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:68277
https://access.redhat.com/errata/RHSA-2026:68278
https://access.redhat.com/security/cve/CVE-2026-16089	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2501724	Issue Tracking Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:-:*:*:*

History

16 Sep 2026, 16:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:68277 - () https://access.redhat.com/errata/RHSA-2026:68278 -

Information

Published : 2026-07-17 15:16

Updated : 2026-09-16 19:17

NVD link : CVE-2026-16089

Mitre link : CVE-2026-16089

CVE.ORG link : CVE-2026-16089

JSON object : View

Products Affected

redhat

build_of_keycloak

CWE

CWE-472

External Control of Assumed-Immutable Web Parameter

CWE-384

Session Fixation

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