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Tracking
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-cxmj-83gh-fp49 | MessagePack-CSharp: Multi-dimensional array formatters allocate from unchecked dimensions |
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 13:30:00 +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, MessagePack-CSharp's multi-dimensional array formatters read dimension lengths directly from the payload and allocate T[,], T[,,], or T[,,,] before validating that the dimension product matches the encoded element count. The formatter reads a guarded element array header, but allocation of the target multi-dimensional array happens before the dimensions are checked against that element count. A small payload can therefore declare large dimensions, provide an empty or tiny inner array, and cause a large heap allocation before element data is validated. This vulnerability is fixed in 2.5.301 and 3.1.7. | |
| Title | MessagePack-CSharp: Multi-dimensional array formatters allocate from unchecked dimensions | |
| Weaknesses | CWE-770 | |
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-25T15:51:25.988Z
Reserved: 2026-05-21T16:18:10.618Z
Link: CVE-2026-48515
Updated: 2026-06-23T12:58:10.966Z
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OpenCVE Enrichment
Updated: 2026-06-24T16:07:25Z
Github GHSA