CVE-2026-48510

Katalog CVE

CVSS 7.5 · High EPSS 0,40%

Kerentanan Improper Handling of Highly Compressed Data (Data Amplification) pada messagepack. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, when MessagePack-CSharp decompresses Lz4Block or Lz4BlockArray payloads, it reads declared uncompressed lengths from the wire and allocates output buffers based on those lengths before validating that the compressed data is valid or that the declared expansion is reasonable. A small payload can claim a very large uncompressed length and force a large allocation before LZ4 decoding begins. This vulnerability is fixed in 2.5.301 and 3.1.7.

Rincian

Terbit di NVD

22 Juni 2026

Terakhir diubah

25 Juni 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-409: Improper Handling of Highly Compressed Data (Data Amplification)
CWE-770: Allocation of Resources Without Limits or Throttling

EPSS (30 hari)

0,40% peluang dieksploitasi; lebih tinggi dari 32,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/MessagePack-CSharp/MessagePack-CSharp/security/advisories/GHSA-v72x-2h86-7f8m mitigasi · advisory vendor