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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2526318

https://access.redhat.com/security/cve/CVE-2026-82968

Details

Source: Mitre, NVD

Published: 2026-09-02

Updated: 2026-09-02

Risk Information

CVSS v2

Base Score: 6.6

Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:C/A:N

Severity: Medium

CVSS v3

Base Score: 6.4

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

Severity: Medium