CVE-2026-82968: Authorization Bypass Through User-Controlled Key in Red Hat Red Hat Build of Keycloak
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.
CVE-2026-82968: Authorization Bypass Through User-Controlled Key in Red Hat Red Hat Build of Keycloak
Description
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.
CVSS v3.1
Score 6.4medium
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-08-31T14:07:24.652Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-82968","vendor":"Red Hat"}]
Threat ID: 6a9784f9acd9273b499dfe8f
Added to database: 09/02/2026, 02:07:53 UTC
Last updated: 09/02/2026, 03:52:23 UTC
Views: 6
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