A flaw was found in the first-broker-login flow of the Keycloak identity management service. (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.
A flaw was found in the first-broker-login flow of the Keycloak identity management service. (CVE-2026-82968)
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
Weaknesses
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2w6p-j7xq-6p7v
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-82968"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a984563acd9273b496ac4f5
Added to database: 09/02/2026, 15:48:51 UTC
Last updated: 09/03/2026, 03:52:00 UTC
Views: 3
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