CVE-2026-32305

traefik

TLP:CLEAR

csirt@kutim:~/threat-intel/cve/CVE-2026-32305

Katalog CVE

CVSS 5.3 · Medium EPSS 0,47%

Kerentanan Improper Authentication pada traefik. Skor CVSS 3.1 5.3 (Medium) menurut NVD.

Deskripsi (NVD)

Traefik is an HTTP reverse proxy and load balancer. Versions 2.11.40 and below, 3.0.0-beta1 through 3.6.11, and 3.7.0-ea.1 are vulnerable to mTLS bypass through the TLS SNI pre-sniffing logic related to fragmented ClientHello packets. When a TLS ClientHello is fragmented across multiple records, Traefik's SNI extraction may fail with an EOF and return an empty SNI. The TCP router then falls back to the default TLS configuration, which does not require client certificates by default. This allows an attacker to bypass route-level mTLS enforcement and access services that should require mutual TLS authentication. This issue is patched in versions 2.11.41, 3.6.11 and 3.7.0-ea.2.

Rincian

Terbit di NVD
20 Maret 2026
Terakhir diubah
15 Juli 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-287: Improper Authentication
CWE-1188: Initialization of a Resource with an Insecure Default
CWE-179: Incorrect Behavior Order: Early Validation
EPSS (30 hari)
0,47% peluang dieksploitasi; lebih tinggi dari 39,2% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
traefik traefik Semua versi sebelum 2.11.41
traefik traefik Versi 3.0.0 hingga 3.6.11
traefik traefik Versi 3.7.0 ea1

> 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.