Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-48506

Gravedad CVSS v3.1:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
22/06/2026
Última modificación:
23/06/2026

Descripción

*** Pendiente de traducción *** MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, MessagePackReader.TrySkip() recursively descends into nested arrays and maps without incrementing the reader depth or calling the configured depth checks. This bypasses MessagePackSecurity.MaximumObjectGraphDepth, the library's documented protection against deeply nested object graphs. Many generated and dynamic formatters call reader.Skip() when they encounter unknown map keys, unknown array members, ignored fields, or data that should be skipped for forward compatibility. A deeply nested value in one of these skipped positions can therefore cause unbounded recursion and an uncatchable StackOverflowException. This vulnerability is fixed in 2.5.301 and 3.1.7.

Productos y versiones vulnerables

CPE Desde Hasta
cpe:2.3:a:messagepack:messagepack:*:*:*:*:*:c\#:*:* 2.5.301 (excluyendo)
cpe:2.3:a:messagepack:messagepack:*:*:*:*:*:c\#:*:* 3.0.3 (incluyendo) 3.1.7 (excluyendo)