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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

Vector 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
Red Hat build of Keycloak 26.4 26.4 earliest → < 26.4-30 26.4-30
Red Hat build of Keycloak 26.6.8 Versions not published
Red Hat build of Keycloak 26.4.17 Versions not published
Red Hat build of Keycloak 26.6 26.6 earliest → < 26.6-24 26.6-24

Other CVEs of Red Hat Build of Keycloak

The 277 CVEs of Red Hat Build of Keycloak →
CVE-2026-120984 Keycloak-services: keycloak-services: manage-clients to arbitrary code execution through inline javascript policy import 9.1 Critical 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
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