Authentication Flaw in Keycloak's User Identity Linkage Affects Red Hat
CVE-2026-97175

8.8HIGH

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-2026-97175?

A security flaw exists in the idp-auto-link authenticator of Keycloak's keycloak-services component. This vulnerability permits the automatic linking of user identities from external providers to local accounts based on email addresses without proper email validation. Consequently, an attacker could exploit this weakness to gain control of a victim's account by utilizing an unverified email address that matches the local account's email. Proper verification mechanisms are crucial to safeguard against unauthorized account access.

References

https://access.redhat.com/security/cve/CVE-2026-97175
vdb-entryx_refsource_REDHAT

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank ProofSpear Security Labs (research@proofspear.io) for reporting this issue.
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