Vendor
MessagePack-CSharp vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 12 vulnerabilities in MessagePack-CSharp: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-48517, was published on 22 June 2026. 2 technologies have a page of their own.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About MessagePack-CSharp
MessagePack-CSharp is an open-source project maintaining a MessagePack serializer for the .NET ecosystem.
MessagePack-CSharp technologies
Latest MessagePack-CSharp vulnerabilities
- CVE-2026-48517: MessagePack for C# security bypass in typeless deserializationmediumCVSS 4EPSS 0.4%
- CVE-2026-48516: MessagePack for C# hash-collision DoS in InterfaceLookupFormattermediumCVSS 4EPSS 0.4%
- CVE-2026-48515: MessagePack for C# resource exhaustion in multi-dimensional array formattersmediumCVSS 4EPSS 0.4%
- CVE-2026-48514: MessagePack for C# denial of service in UnsafeBlitFormatterBasemediumCVSS 4EPSS 0.4%
- CVE-2026-48513: MessagePack for C# uncontrolled recursion in DynamicUnionResolvermediumCVSS 4EPSS 0.4%
- CVE-2026-48512: MessagePack for C# uncontrolled recursion in JSON conversion helpersmediumCVSS 4EPSS 0.4%
- CVE-2026-48511: MessagePack for C# denial of service in ExpandoObjectFormatterhighCVSS 7.5EPSS 0.4%
- CVE-2026-48510: MessagePack for C# denial of service via LZ4 decompression bombhighCVSS 7.5EPSS 0.4%
- CVE-2026-48509: MessagePack for C# insecure default in MessagePackInputFormattermediumCVSS 4EPSS 0.4%
- CVE-2026-48506: MessagePack for C# uncontrolled recursion in MessagePackReader.TrySkiphighCVSS 7.5EPSS 0.5%
- CVE-2026-48502: MessagePack for C# stack overflow in MessagePackReader.ReadDateTimehighCVSS 4EPSS 0.4%
- CVE-2026-48109: MessagePack for C# out-of-bounds read in LZ4 decompressionhighCVSS 8.2EPSS 0.5%
Most severe MessagePack-CSharp vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-48109: MessagePack for C# out-of-bounds read in LZ4 decompressionhighCVSS 8.2EPSS 0.5%
- CVE-2026-48506: MessagePack for C# uncontrolled recursion in MessagePackReader.TrySkiphighCVSS 7.5EPSS 0.5%
- CVE-2026-48511: MessagePack for C# denial of service in ExpandoObjectFormatterhighCVSS 7.5EPSS 0.4%
- CVE-2026-48510: MessagePack for C# denial of service via LZ4 decompression bombhighCVSS 7.5EPSS 0.4%
- CVE-2026-48502: MessagePack for C# stack overflow in MessagePackReader.ReadDateTimehighCVSS 4EPSS 0.4%
- CVE-2026-48509: MessagePack for C# insecure default in MessagePackInputFormattermediumCVSS 4EPSS 0.4%
- CVE-2026-48516: MessagePack for C# hash-collision DoS in InterfaceLookupFormattermediumCVSS 4EPSS 0.4%
- CVE-2026-48515: MessagePack for C# resource exhaustion in multi-dimensional array formattersmediumCVSS 4EPSS 0.4%
- CVE-2026-48514: MessagePack for C# denial of service in UnsafeBlitFormatterBasemediumCVSS 4EPSS 0.4%
- CVE-2026-48513: MessagePack for C# uncontrolled recursion in DynamicUnionResolvermediumCVSS 4EPSS 0.4%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/messagepack-csharp.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "MessagePack-CSharp vulnerabilities", https://junglewise.ai/threats/vendors/messagepack-csharp, 26 September 2026.