CVE-2026-48517

Katalog CVE

CVSS 7.5 · High EPSS 0,35%

Kerentanan Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') 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, MessagePack-CSharp's typeless deserialization includes MessagePackSerializerOptions.ThrowIfDeserializingTypeIsDisallowed(Type) as a safety check for dangerous types. The default implementation checks the outer type name, but it does not recursively inspect array element types or generic type arguments. As a result, a type that would be blocked directly can be wrapped inside an array or constructed generic type and pass the outer type check. The formatter machinery can then materialize formatters for the inner blocked type. 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:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
CWE-502: Deserialization of Untrusted Data

EPSS (30 hari)

0,35% peluang dieksploitasi; lebih tinggi dari 26,4% 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-qhmf-xw27-6rqr mitigasi · advisory vendor