Technology · NuGet
MessagePack (NuGet) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 15 vulnerabilities in MessagePack (NuGet): 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-92707, was published on 15 October 2026. 1 vulnerability in the last four weeks, up from none in the four before.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About MessagePack (NuGet)
An efficient binary serialization format that lets you exchange data among multiple languages like JSON.
Latest MessagePack (NuGet) vulnerabilities
- CVE-2026-92707: MessagePack-CSharp memory exhaustion in nested array deserializationmediumCVSS 5.3EPSS 0.7%
- 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%
- CVE-2024-48924: MessagePack allows untrusted data to lead to DoS attack due to hash collisions and stack overflowinfoEPSS 0.4%
- CVE-2020-5234: Untrusted data can lead to DoS attack due to hash collisions and stack overflow in MessagePacklowCVSS 3.1EPSS 1.6%
Most severe MessagePack (NuGet) 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-2026-92707: MessagePack-CSharp memory exhaustion in nested array deserializationmediumCVSS 5.3EPSS 0.7%
- 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%
Vulnerabilities per week
1 vulnerability in the last four weeks, up from none in the four before. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 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 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 1 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many MessagePack (NuGet) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/messagepack)<a href="https://junglewise.ai/threats/technologies/messagepack"><img src="https://junglewise.ai/threats/technologies/messagepack/badge.svg" alt="MessagePack (NuGet) vulnerabilities" /></a>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/technologies/messagepack.json, and this page as text at https://junglewise.ai/threats/technologies/messagepack.md, 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 (NuGet) vulnerabilities", https://junglewise.ai/threats/technologies/messagepack, 9 November 2026.