CVE-2026-33223: linuxfoundation nats-server

csirt@kutim:~/threat-intel/cve/CVE-2026-33223

CVSS 5.4 · Medium EPSS 0,24%

Kerentanan Authentication Bypass by Spoofing pada linuxfoundation nats-server. Skor CVSS 3.1 5.4 (Medium) menurut NVD.

Deskripsi (NVD)

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, the NATS message header `Nats-Request-Info:` is supposed to be a guarantee of identity by the NATS server, but the stripping of this header from inbound messages was not fully effective. An attacker with valid credentials for any regular client interface could thus spoof their identity to services which rely upon this header. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.

Rincian

Terbit di NVD: 25 Maret 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 5.4 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-290: Authentication Bypass by Spoofing
EPSS (30 hari): 0,24% peluang dieksploitasi; lebih tinggi dari 13,8% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
linuxfoundation	nats-server	Semua versi sebelum 2.11.15
linuxfoundation	nats-server	Versi 2.12.0 hingga sebelum 2.12.6

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://advisories.nats.io/CVE/secnote-2026-09.txt advisory vendor
https://github.com/nats-io/nats-server/security/advisories/GHSA-pwx7-fx9r-hr4h advisory vendor

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.