CVE-2026-76816

Katalog CVE

CVSS 3.5 · Low EPSS 0,17%

Kerentanan Improper Input Validation. Skor CVSS 3.1 3.5 (Low) menurut github.com.

Deskripsi (NVD)

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.137.Final and 4.2.17.Final, MqttEncoder does not validate client identifiers, will topics, usernames, and PUBLISH topic names before encoding, allowing prohibited null bytes in MQTT UTF-8 string fields and potentially causing routing, access-control, or identity mismatches in downstream brokers. The vulnerability is exploitable when an application uses Netty's MQTT encoder to construct messages from user-controlled input. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.

Rincian

Terbit di NVD

24 Agustus 2026

Terakhir diubah

12 Oktober 2026

Status NVD

Deferred

CVSS 3.1

3.5 (Low), sumber github.com
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation
CWE-626: Null Byte Interaction Error (Poison Null Byte)

EPSS (30 hari)

0,17% peluang dieksploitasi; lebih tinggi dari 6,3% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7ddbb8ff7
• https://github.com/netty/netty/commit/9e0519239108a69b7e9bbc5e9182ee139a0d7961
• https://github.com/netty/netty/security/advisories/GHSA-43fm-7cxg-hf3j