CVE-2026-97846 (GCVE-0-2026-97846)

Vulnerability from cvelistv5 – Published: 2026-09-25 06:16 – Updated: 2026-09-25 06:16
VLAI
Title
Keycloak-services: keycloak-services: standard token exchange v2 bypasses mtls holder-of-key binding
Summary
Keycloak provides a feature called mTLS holder-of-key binding which ensures that a token can only be used by the client that originally requested it by binding it to their digital certificate. A flaw was discovered where the new Standard Token Exchange V2 feature does not check for this certificate. This allows an attacker with stolen client credentials to obtain a standard, unrestricted token that bypasses these security protections.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-287 - Improper Authentication
Assigner
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-97846 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2540949 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Build of Keycloak     cpe:/a:redhat:build_keycloak:
Create a notification for this product.
Red Hat Red Hat Single Sign-On 7     cpe:/a:redhat:red_hat_single_sign_on:7
Create a notification for this product.
Date Public
2026-09-24 16:58
Show details on NVD website
To clipboard 

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