CVE-2026-75596

Katalog CVE

CVSS 7.5 · High EPSS 0,37%

Kerentanan Inefficient Algorithmic Complexity pada netty. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, the default io.netty.handler.ssl.SniHandler constructors use the pre-handshake ClientHello aggregation path in handler/src/main/java/io/netty/handler/ssl/SslClientHelloHandler.java at io.netty.handler.ssl.SslClientHelloHandler#decode, where handshakeBuffer.clear() and writeBytes() recopy all previously received body bytes for every additional TLS record. An unauthenticated remote peer can advertise a large ClientHello and deliver its body in thousands of tiny records, causing quadratic CPU work on the event loop before the TLS handshake completes and degrading TLS handling for other clients. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.

Rincian

Terbit di NVD

19 Agustus 2026

Terakhir diubah

22 September 2026

Status NVD

Analyzed

CVSS 3.1

7.5 (High), sumber NVD
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-407: Inefficient Algorithmic Complexity

EPSS (30 hari)

0,37% peluang dieksploitasi; lebih tinggi dari 29,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/netty/netty/security/advisories/GHSA-fccg-mwvh-qqg4 advisory vendor
• https://github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7ddbb8ff7 patch
• https://github.com/netty/netty/commit/9e0519239108a69b7e9bbc5e9182ee139a0d7961 patch
• https://github.com/netty/netty/pull/17213 issue tracking · patch
• https://github.com/netty/netty/pull/17217 issue tracking · patch
• https://github.com/netty/netty/releases/tag/netty-4.1.137.Final release notes
• https://github.com/netty/netty/releases/tag/netty-4.2.17.Final release notes