CVE-2026-16103

Katalog CVE

CVSS 4.3 · Medium EPSS 0,35%

Kerentanan Authentication Bypass by Primary Weakness pada redhat build of keycloak. Skor CVSS 3.1 4.3 (Medium) menurut redhat.com.

Deskripsi (NVD)

A flaw was found in the keycloak-services component of Keycloak. This issue is an incomplete fix for CVE-2026-9798, where brute-force protection checks were added to the Client-Initiated Backchannel Authentication (CIBA) initiation handler but were omitted from the token redemption handler. This allows an attacker with valid client credentials to obtain access and refresh tokens for a user account that has been locked due to brute-force protection, provided the authentication request was started before the lockout occurred and was approved by the user.

Rincian

Terbit di NVD

17 Juli 2026

Terakhir diubah

31 Agustus 2026

Status NVD

Modified

CVSS 3.1

4.3 (Medium), sumber redhat.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-305: Authentication Bypass by Primary Weakness
CWE-841: Improper Enforcement of Behavioral Workflow

EPSS (30 hari)

0,35% peluang dieksploitasi; lebih tinggi dari 26,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://access.redhat.com/security/cve/CVE-2026-16103 advisory vendor
• https://bugzilla.redhat.com/show_bug.cgi?id=2501736 issue tracking · advisory vendor