CVE-2026-18203

Katalog CVE

CVSS 6.5 · Medium EPSS 0,31%

Kerentanan Incorrect Authorization pada redhat build of keycloak. Skor CVSS 3.1 6.5 (Medium) menurut redhat.com.

Deskripsi (NVD)

A flaw was found in the group policy evaluation logic of Keycloak, an identity and access management solution. When a group policy is set to extend permissions to child groups, the system incorrectly uses a simple text-based prefix check to verify group membership. This allows a user who belongs to a different group with a similar starting name to bypass security checks and gain unauthorized access to administrative functions or protected resources.

Rincian

Terbit di NVD

31 Juli 2026

Terakhir diubah

7 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-863: Incorrect Authorization

EPSS (30 hari)

0,31% peluang dieksploitasi; lebih tinggi dari 22,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://access.redhat.com/security/cve/CVE-2026-18203 advisory vendor
• https://bugzilla.redhat.com/show_bug.cgi?id=2508291 issue tracking · advisory vendor