점검 대응높음KEV 미등록
CVE-2026-48502
MessagePack-CSharp MessagePack-CSharp, messagepack 취약점
MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, MessagePackReader.ReadDateTime() can allocate stack memory based on an attacker-controlled MessagePack extension length. In the slow path for timestamp extension parsing, the computed tokenSize includes the extension body length from the wire and is used in a stackalloc operation before the extension length is validated as one of the valid timestamp sizes. A very small payload can claim a large timestamp extension body and cause a stack allocation large enough to trigger an uncatchable StackOverflowException,...
- 대응 우선순위
- 점검
- CVSS
- 8.2
- EPSS
- 0.26% 백분위 17.1% · 2026.08.02 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.06.23