# Andrew Arnott Nerdbank-Messagepack vulnerabilities

Source: https://junglewise.ai/threats/technologies/nerdbank-messagepack  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/nerdbank-messagepack.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Andrew Arnott Nerdbank-Messagepack: 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, Nerdbank.MessagePack Inefficient CPU Computation in ExpandoObjectConverter, was published on 29 May 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 3 (0 critical, 0 exploited in the wild)

## About Andrew Arnott Nerdbank-Messagepack

A library that provides MessagePack serialization for .NET with a focus on performance and modern APIs.

## Latest Andrew Arnott Nerdbank-Messagepack vulnerabilities

- [Nerdbank.MessagePack Inefficient CPU Computation in ExpandoObjectConverter](https://junglewise.ai/threats/nerdbank-messagepack-inefficient-cpu-computation-in-4348932f) (medium, CVSS 5.3, published 29 May 2026)
- [Nerdbank.MessagePack memory amplification DoS in collection deserialization](https://junglewise.ai/threats/nerdbank-messagepack-memory-amplification-dos-in-collection-9ee7fe7f) (medium, CVSS 5.3, published 29 May 2026)
- [CVE-2026-44375: AArnott Nerdbank.MessagePack stack overflow in DateTime decoding](https://junglewise.ai/threats/cve-2026-44375-aarnott-nerdbank-messagepack-stack-overflow-in-datetime-decoding) (high, CVSS 7.5, published 14 May 2026)

## Most severe Andrew Arnott Nerdbank-Messagepack vulnerabilities

- [CVE-2026-44375: AArnott Nerdbank.MessagePack stack overflow in DateTime decoding](https://junglewise.ai/threats/cve-2026-44375-aarnott-nerdbank-messagepack-stack-overflow-in-datetime-decoding) (high, CVSS 7.5, published 14 May 2026)
- [Nerdbank.MessagePack Inefficient CPU Computation in ExpandoObjectConverter](https://junglewise.ai/threats/nerdbank-messagepack-inefficient-cpu-computation-in-4348932f) (medium, CVSS 5.3, published 29 May 2026)
- [Nerdbank.MessagePack memory amplification DoS in collection deserialization](https://junglewise.ai/threats/nerdbank-messagepack-memory-amplification-dos-in-collection-9ee7fe7f) (medium, CVSS 5.3, published 29 May 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Andrew Arnott Nerdbank-Messagepack vulnerabilities", https://junglewise.ai/threats/technologies/nerdbank-messagepack, 9 November 2026.