6.8

CVE-2026-97846

Keycloak-services: keycloak-services: standard token exchange v2 bypasses mtls holder-of-key binding

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerRed Hat
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Produkt Red Hat Build of Keycloak
Default Statusaffected
HerstellerRed Hat
≫
Produkt Red Hat Build of Keycloak
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat Single Sign-On 7
Default Statusunaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.14% 0.024
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 6.8 1.6 5.2
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE-287 Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

https://access.redhat.com/security/cve/CVE-2026-97846
https://bugzilla.redhat.com/show_bug.cgi?id=2540949