CVE-2026-82968

Medium

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.

SeverityMedium

CVSS6.4

Exploit probability—

Product

Red Hat Build of Keycloak

PublishedSep 2, 2026

First seenSep 2, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Vendor advisories

access.redhat.com/errata/RHSA-2026:95761

Affected products

Product	Affected versions	Fixed in
Red Hat Red Hat Build of Keycloak	No range specified	—
Red Hat Red Hat Single Sign-On 7	No range specified	—

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