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.
Published: 2026-09-02
Score: 6.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Tracking

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History

Wed, 02 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Wed, 02 Sep 2026 02:15:00 +0000

Type Values Removed Values Added
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.
Title Keycloak-services: keycloak-services: cross-session email verification proof not bound to upstream identity for social providers
First Time appeared Redhat
Redhat build Keycloak
Redhat red Hat Single Sign On
Weaknesses CWE-639
CPEs cpe:/a:redhat:build_keycloak:
cpe:/a:redhat:red_hat_single_sign_on:7
Vendors & Products Redhat
Redhat build Keycloak
Redhat red Hat Single Sign On
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N'}


Subscriptions

Redhat Build Keycloak Red Hat Single Sign On
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-02T13:00:51.029Z

Reserved: 2026-08-31T14:07:24.652Z

Link: CVE-2026-82968

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-02T02:17:19.750

Modified: 2026-09-02T13:18:13.947

Link: CVE-2026-82968

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-27T10:19:11Z

Links: CVE-2026-82968 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T03:30:06Z

Weaknesses