CVE-2026-82968
A flaw was found in the first-broker-login flow of the Keycloak identity management service. When a user links a social identity provider account to their local account, the verification proof generated is not strictly bound to the specific upstream identity being verified. This allows an attacker with a different account on the same social provider to intercept the process and link their own account to the victim's local profile, gaining unauthorized access.
Published:Aug 27, 2026
Last Modified:Sep 3, 2026
EPS:Sep 2, 2026
EPSS Score:0.00176
CVSS Score:6.4
Affected Products
Vendor
Product
Action
Vendor
Redhat
Product
Build Keycloak
Redhat
Build Keycloak
Vendor
Redhat
Product
Build Of Keycloak
Redhat
Build Of Keycloak
Vendor
Redhat
Product
Red Hat Single Sign On
Redhat
Red Hat Single Sign On
Vendor
Redhat
Product
Single Sign-on
Redhat
Single Sign-on
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
No CAPEC recorded yet
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
