Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
Sign in to view the affected projects.
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-w567-gjr2-hm5j | MessagePack-CSharp: Unity unsafe blit formatter allocates from unbounded byte length |
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, UnsafeBlitFormatterBase<T>.Deserialize reads an attacker-controlled byteLength from an extension payload and allocates an array based on that value before validating it against the extension header length or remaining payload bytes. The outer extension header is bounded by available input, but that bound is not used to constrain the inner byteLength before allocation. A very small payload can therefore request a very large T[] allocation. This vulnerability is fixed in 2.5.301 and 3.1.7. | |
| Title | MessagePack-CSharp: Unity unsafe blit formatter allocates from unbounded byte length | |
| Weaknesses | CWE-770 | |
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-25T15:23:26.175Z
Reserved: 2026-05-21T16:18:10.618Z
Link: CVE-2026-48514
Updated: 2026-06-23T12:13:18.495Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-06-24T16:07:23Z
Github GHSA