Keycloak-services: keycloak-services: cross-session email verification proof not bound to upstream identity for social providers (Red Hat Red Hat Build of Keycloak)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.28 % · percentile 20 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Awaiting Analysis
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.
Weaknesses (CWE)
- CWE-639 — Authorization Bypass Through User-Controlled Key
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N | redhat |
| CVSS 3.1 | MEDIUM 6.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N | NVD · secalert@redhat.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-69800
- GCVE · GCVE-0-2026-82968
Affected products
| Product | Versions |
|---|---|
| Red Hat · Red Hat Build of Keycloak | |
| Red Hat · Red Hat Build of Keycloak | |
| Red Hat · Red Hat Build of Keycloak | |
| Red Hat · Red Hat Single Sign-On 7 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |