6.4 Medium

CVE-2026-97367 Keycloak-services: keycloak-services: dcr azp and sid claim substitution allows account rest session takeover

Description

A flaw was found in the Keycloak Account REST API where it incorrectly handles session identification. A malicious client owner can manipulate their own security tokens to point to a different user's active session. This allows the attacker to access and modify the victim's account information, potentially leading to a full account takeover by changing the recovery email and resetting the password.

CVSS 3.1 detail

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

Exploitable remotely over the network, with an ordinary account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector: Network
Attack complexity: High
Privileges required: Low
Interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: None

Affected products and versions

Product	Affected versions	Fixed in
Red Hat Build of Keycloak	Versions not published
Red Hat Single Sign-On 7	Versions not published

References

access.redhat.com access.redhat.com
RHBZ#2540080 bugzilla.redhat.com

Timeline

Published November 6, 2026
Last modified November 6, 2026

The 276 CVEs of Red Hat Build of Keycloak →

CVE-2026-9797 Keycloak: keycloak: privilege escalation via client authentication manipulation by an authenticated administrator 6.5 Medium CVE-2026-97848 Keycloak-services: keycloak-services: protocol mapper with jsontype=json bypasses token sanitization 6.5 Medium CVE-2026-96547 Keycloak-services: keycloak-services: dcr registration-time claim-path gap allows forging realm_access.roles 6.5 Medium CVE-2026-96460 Keycloak-services: keycloak-services: indefinite access token renewal via standard token exchange v2 5.4 Medium

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