CVE-2026-4634

Katalog CVE

CVSS 7.5 · High EPSS 0,86%

Kerentanan Excessive Platform Resource Consumption within a Loop pada redhat build of keycloak. Skor CVSS 3.1 7.5 (High) menurut redhat.com.

Deskripsi (NVD)

A flaw was found in Keycloak. An unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with an excessively long scope parameter to the OpenID Connect (OIDC) token endpoint. This leads to high resource consumption and prolonged processing times, ultimately resulting in a Denial of Service (DoS) for the Keycloak server.

Rincian

Terbit di NVD

2 April 2026

Terakhir diubah

6 Oktober 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-1050: Excessive Platform Resource Consumption within a Loop

EPSS (30 hari)

0,86% peluang dieksploitasi; lebih tinggi dari 57,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://access.redhat.com/errata/RHSA-2026:6475 advisory vendor
• https://access.redhat.com/errata/RHSA-2026:6476 advisory vendor
• https://access.redhat.com/errata/RHSA-2026:6477 advisory vendor
• https://access.redhat.com/errata/RHSA-2026:6478 advisory vendor
• https://access.redhat.com/security/cve/CVE-2026-4634 advisory vendor
• https://bugzilla.redhat.com/show_bug.cgi?id=2450250 issue tracking · advisory vendor
• https://access.redhat.com/errata/RHSA-2026:76128
• https://access.redhat.com/errata/RHSA-2026:76129
• https://access.redhat.com/errata/RHSA-2026:76130
• https://access.redhat.com/errata/RHSA-2026:76132
• https://access.redhat.com/errata/RHSA-2026:76134
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4634.json