ROOT-APP-PYPI-GHSA-6V7P-G79W-8964 GHSA-6v7p-g79w-8964 in msgpack - Patched by Root

Root has patched GHSA-6v7p-g79w-8964 in the msgpack package for Root:PyPI. Multiple fixed versions available...

CVE-2026-57585 MessagePack: Out-of-bounds read/crash on Unpacker reuse after caught error

MessagePack is the serializer implementation for Python msgpack.org. Prior to 1.2.1, there is an Out-of-bounds read/crash on Unpacker reuse after a caught error, potentially leading to a DoS attack. If the Unpacker is used repeatedly after an error occurs, the process may crash with a SEGV. This...

GHSA-Q2H6-GHWM-5QM8 MessagePack-CSharp: InterfaceLookupFormatter bypasses collision-resistant comparer settings

Summary InterfaceLookupFormatter constructs an internal Dictionary with the default equality comparer instead of the security-aware comparer supplied by options.Security.GetEqualityComparer. Other hash-based collection formatters use the security-aware comparer when...

MessagePack-CSharp: Multi-dimensional array formatters allocate from unchecked dimensions

Summary MessagePack-CSharp's multi-dimensional array formatters read dimension lengths directly from the payload and allocate T,, T,,, or T,,, before validating that the dimension product matches the encoded element count. The formatter reads a guarded element array header, but allocation of the...

Allocation of Resources Without Limits or Throttling

Overview MessagePack is a MessagePackMsgPack Serializer for C.NET, .NET Core, Unity, Xamarin. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the Deserialize function. An attacker can cause excessive memory allocation or process...

EUVD-2026-38382

MessagePack-CSharp: Unity unsafe blit formatter allocates from unbounded byte length...

EUVD-2026-38384

MessagePack-CSharp: JSON conversion APIs can recurse without consistent depth enforcement...

EUVD-2026-38386

MessagePack-CSharp: LZ4 decompression allocates from unbounded declared output lengths...

EUVD-2026-38387

MessagePack-CSharp: ASP.NET Core MessagePackInputFormatter defaults to TrustedData for HTTP request bodies...

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

Overview MessagePack is a MessagePackMsgPack Serializer for C.NET, .NET Core, Unity, Xamarin. Affected versions of this package are vulnerable to Use of Externally-Controlled Input to Select Classes or Code 'Unsafe Reflection' in the ReadDateTime function when processing a MessagePack timestamp...

CVE-2026-48510 MessagePack-CSharp: LZ4 decompression allocates from unbounded declared output lengths

MessagePack for C is a MessagePack serializer for C. Prior to 2.5.301 and 3.1.7, when MessagePack-CSharp decompresses Lz4Block or Lz4BlockArray payloads, it reads declared uncompressed lengths from the wire and allocates output buffers based on those lengths before validating that the compressed...

dotnet: ASP.NET Core: Denial of Service via uncontrolled resource consumption

A flaw was found in ASP.NET Core SignalR and Blazor Server. A remote attacker could send a specially crafted MessagePack payload containing deeply nested arrays that trigger excessive recursion and cause a stack overflow. This issue may result in application termination and a denial of service...

Denial Of Service (DoS)

github.com/gofiber/fiber is vulnerable to Denial Of Service DoS. The vulnerability is due to unvalidated MsgPack deserialization of the fiberflash cookie, which allows an unauthenticated attacker to supply a crafted cookie value that triggers excessive memory allocation, resulting in a...

CVE-2026-42600

Summary of the vulnerability (CVE-2026-42600) : MinIO’s ReadMultiple internode storage-REST endpoint is vulnerable to path traversal when processing a msgpack-encoded ReadMultipleReq body. An attacker holding the cluster root JWT can craft a request to POST /minio/storage/{drivePath}/v63/rmpl wit...

GHSA-H9Q6-HC68-35RP Denial of service in github.com/shamaton/msgpack

The msgpack decoder fails to properly validate the input buffer length when processing truncated fixext data format codes 0xd4-0xd8. This can lead to an out-of-bounds read and a runtime panic, allowing a denial of service attack...

CVE-2026-2454

Mattermost vulnerability CVE-2026-2454 affects Mattermost server versions 11.3.x (≤11.3.0), 11.2.x (≤11.2.2), and 10.11.x (≤10.11.10). The issue arises from incorrect handling of array lengths in error reports, enabling a malicious user to trigger OOMs and crash the server by sending corrupted ms...

Deserialization of Untrusted Data

Overview langgraph-checkpoint is a library with base interfaces for LangGraph checkpoint savers. Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the msgpack-encoded checkpoints. An attacker can execute arbitrary code by supplying a crafted msgpack-encoded...

Deserialization of Untrusted Data

Overview langgraph is a Building stateful, multi-actor applications with LLMs Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the msgpack-encoded checkpoints. An attacker can execute arbitrary code by supplying a crafted msgpack-encoded payload to the...

EUVD-2026-9860

LangGraph checkpoint loading has unsafe msgpack deserialization...

msgpacker security vulnerability

msgpacker is a fast MessagePack NodeJS/JavaScript implementation. A security vulnerability exists in versions of msgpacker prior to 1.10.1, which stems from the fact that when decoding a user-supplied MessagePack message, an attacker can craft the message in such a way that the decoder triggers...