CVE-2026-31838: istio — Katalog CVE

csirt@kutim:~/threat-intel/cve/CVE-2026-31838

CVSS 5.3 · Medium EPSS 0,37%

Kerentanan Incorrect Authorization pada istio. Skor CVSS 3.1 5.3 (Medium) menurut NVD.

Deskripsi (NVD)

Istio is an open platform to connect, manage, and secure microservices. Prior to 1.29.1, 1.28.5, and 1.27.8, a vulnerability in Envoy RBAC header matching could allow authorization policy bypass when policies rely on HTTP headers that may contain multiple values. An attacker could craft requests with multiple header values in a way that causes Envoy to evaluate the header differently than intended, potentially bypassing authorization checks. This may allow unauthorized requests to reach protected services when policies depend on such header-based matching conditions. This vulnerability is fixed in 1.29.1, 1.28.5, and 1.27.8.

Rincian

Terbit di NVD: 10 Maret 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 5.3 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-863: Incorrect Authorization
EPSS (30 hari): 0,37% peluang dieksploitasi; lebih tinggi dari 29,2% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
istio	istio	Semua versi sebelum 1.27.8
istio	istio	Versi 1.28.0 hingga sebelum 1.28.5
istio	istio	Versi 1.29.0 hingga sebelum 1.29.1

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.