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Tracking
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-382j-8mxh-c7x2 | MessagePack-CSharp: Denial of service vulnerabilities can swamp the CPU or crash the process with stack and heap overflows |
Wed, 24 Jun 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Messagepack
Messagepack messagepack-csharp |
|
| Vendors & Products |
Messagepack
Messagepack messagepack-csharp |
Tue, 23 Jun 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 22 Jun 2026 22:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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, terminating the host process. This vulnerability is fixed in 2.5.301 and 3.1.7. | |
| Title | MessagePack-CSharp: Denial of service vulnerabilities can swamp the CPU or crash the process with stack and heap overflows | |
| Weaknesses | CWE-1188 CWE-125 CWE-190 CWE-407 CWE-409 CWE-470 CWE-502 CWE-674 CWE-789 |
|
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-23T15:05:33.595Z
Reserved: 2026-05-21T15:33:08.293Z
Link: CVE-2026-48502
Updated: 2026-06-23T14:58:33.427Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-06-24T16:07:14Z
Github GHSA