CVE-2026-18206

Katalog CVE

CVSS 3.7 · Low EPSS 0,32%

Kerentanan Improper Input Validation pada redhat build of keycloak. Skor CVSS 3.1 3.7 (Low) menurut NVD.

Deskripsi (NVD)

A flaw was found in the keycloak-services component of Keycloak, which provides identity and access management services. The issue occurs when a realm administrator uses a wildcard domain (like *.example.com) to restrict which hosts can register or update clients. Due to improper validation, the system accepts any hostname that ends with the specified domain suffix, even if it is not a legitimate subdomain. An attacker who can control the reverse DNS of their connection can bypass these host-based restrictions, potentially allowing unauthorized client modifications.

Rincian

Terbit di NVD

31 Juli 2026

Terakhir diubah

7 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

3.7 (Low), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation

EPSS (30 hari)

0,32% peluang dieksploitasi; lebih tinggi dari 22,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://access.redhat.com/security/cve/CVE-2026-18206 advisory vendor
• https://bugzilla.redhat.com/show_bug.cgi?id=2508292 issue tracking · advisory vendor