Authorization Flaw in Keycloak's Authentication Process
CVE-2026-125652

6.8MEDIUM

Key Information:

Vendor

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

What is CVE-2026-125652?

A flaw exists in the keycloak-services component of Keycloak, impacting the core authentication and authorization functionalities. The issue arises when a user attempts to log in after accessing the password reset page, which causes the system to inadvertently skip critical security verifications associated with the Proof Key for Code Exchange (PKCE). This vulnerability allows potential attackers to intercept a login code, granting them unauthorized access to user accounts without the necessary security verifier.

References

https://access.redhat.com/security/cve/CVE-2026-125652
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2569299
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Adel Assakaf (Oteria) for reporting this issue.
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