Identity Resolution Flaw in Keycloak Affects Security for Realm Administrators
CVE-2026-97847

7.1HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak
Red Hat Single Sign-on 7
Vendor
CVE Published:
5 November 2026

What is CVE-2026-97847?

A critical flaw exists in Keycloak's protocol mapper and identity resolution features, particularly affecting service-account tokens that do not include session IDs. This vulnerability allows an attacker with limited client management rights to exploit hardcoded-claim mappers, enabling them to manipulate identity claims. Consequently, there is a risk that these attackers may gain the ability to impersonate realm administrators, which could result in unauthorized access and complete control over the affected realm.

References

https://access.redhat.com/security/cve/CVE-2026-97847
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2540950
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.