# CVE-2024-48924: MessagePack allows untrusted data to lead to DoS attack due to hash collisions and stack overflow

Source: https://junglewise.ai/threats/cve-2024-48924-messagepack-allows-untrusted-data-to-lead-to-dos-attack-due-to  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-10-17  
License: CC BY 4.0 with a link back

CVE-2024-48924 · Severity: info · Published 2024-10-17

MessagePack allows untrusted data to lead to DoS attack due to hash collisions and stack overflow

Technologies: [MessagePack (NuGet)](https://junglewise.ai/threats/technologies/messagepack). Vendors: [NuGet](https://junglewise.ai/threats/vendors/nuget).

## Quick answers

**Is CVE-2024-48924 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2024-48924 being exploited in the wild.

**How severe is CVE-2024-48924?** Informational severity, published 17 October 2024.

**Which products and versions are affected?** MessagePack (NuGet) ECOSYSTEM:introduced=0,fixed=2.5.187.

**Is there a fix for CVE-2024-48924?** Yes. MessagePack (NuGet): upgrade to 2.5.187 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2024-48924?** Check whether you run MessagePack (NuGet) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- MessagePack (NuGet): upgrade to 2.5.187 or later

  ```sh
  dotnet add package MessagePack --version 2.5.187
  ```


## Affected products

- MessagePack (NuGet) ECOSYSTEM:introduced=0,fixed=2.5.187

## Identifiers

- CVE-2024-48924
- GHSA-4qm4-8hg2-g2xm

## Related threats

- [MessagePack-CSharp memory exhaustion in nested array deserialization](https://junglewise.ai/threats/cve-2026-92707-messagepack-nested-arrays-can-blow-past-buffer-length-limits)
- [MessagePack for C# security bypass in typeless deserialization](https://junglewise.ai/threats/cve-2026-48517-messagepack-for-c-security-bypass-in-typeless-deserialization)
- [MessagePack for C# hash-collision DoS in InterfaceLookupFormatter](https://junglewise.ai/threats/cve-2026-48516-messagepack-for-c-hash-collision-dos-in-interfacelookupformatter)
- [MessagePack for C# resource exhaustion in multi-dimensional array formatters](https://junglewise.ai/threats/cve-2026-48515-messagepack-for-c-resource-exhaustion-in-multi-dimensional-array)
- [MessagePack for C# denial of service in UnsafeBlitFormatterBase](https://junglewise.ai/threats/cve-2026-48514-messagepack-for-c-denial-of-service-in-unsafeblitformatterbase)