CVE-2026-48109
Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-20
Validación incorrecta de entrada
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, A vulnerability exists in the optional LZ4 decompression path used by MessagePack compression modes Lz4Block and Lz4BlockArray. The decoder implementation is based on a deprecated fast-decompression algorithm that does not take a source-length bound. A remote attacker can send a crafted MessagePack payload with manipulated LZ4 token/length fields to force out-of-bounds reads from the compressed input buffer. In affected environments, this can trigger an AccessViolationException during decompression, causing process termination (denial of service). Under some conditions, limited unintended memory disclosure from over-read data may also be possible before failure. This vulnerability is fixed in 2.5.301 and 3.1.7.
Impacto
Puntuación base 3.x
8.20
Gravedad 3.x
ALTA
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) |
Para consultar la lista completa de nombres de CPE con productos y versiones, ver esta página



