GHSA-W567-GJR2-HM5J MessagePack-CSharp: Unity unsafe blit formatter allocates from unbounded byte length

Summary UnsafeBlitFormatterBase.Deserialize reads an attacker-controlled byteLength from an extension payload and allocates an array based on that value before validating it against the extension header length or remaining payload bytes. The outer extension header is bounded by available input, b...

CVE-2026-48514

MessagePack for C is a MessagePack serializer for C. Prior to 2.5.301 and 3.1.7, UnsafeBlitFormatterBase.Deserialize reads an attacker-controlled byteLength from an extension payload and allocates an array based on that value before validating it against the extension header length or remaining...

CVE-2026-48514

MessagePack for C is a MessagePack serializer for C. Prior to 2.5.301 and 3.1.7, UnsafeBlitFormatterBase.Deserialize reads an attacker-controlled byteLength from an extension payload and allocates an array based on that value before validating it against the extension header length or remaining...

PT-2026-51398

Name of the Vulnerable Software and Affected Versions MessagePack for C versions prior to 2.5.301 MessagePack for C versions prior to 3.1.7 Description The UnsafeBlitFormatterBase.Deserialize function reads an attacker-controlled byteLength from an extension payload and allocates an array based o...

Denial-of-Service (DoS)

MessagePack for Java is vulnerable to a Denial-Of-Service DoS . The vulnerability is due to unbounded memory allocation during deserialization, where the library trusts attacker-controlled EXT32 payload length metadata and allocates a byte array of that declared size when ExtensionValue.getData i...

MessagePack for Java Vulnerable to Remote DoS via Malicious EXT Payload Allocation

Summary Affected Components: org.msgpack.core.MessageUnpacker.readPayload org.msgpack.core.MessageUnpacker.unpackValue org.msgpack.value.ExtensionValue.getData A denial-of-service vulnerability exists in MessagePack for Java when deserializing .msgpack files containing EXT32 objects with...

Linux Distros Unpatched Vulnerability : CVE-2026-21452

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - MessagePack for Java is a serializer implementation for Java. A denial-of-service vulnerability exists in versions prior to 0.9.11 when deserializing .msgpack...

CVE-2026-21452

MessagePack for Java is a serializer implementation for Java. A denial-of-service vulnerability exists in versions prior to 0.9.11 when deserializing .msgpack files containing EXT32 objects with attacker-controlled payload lengths. While MessagePack-Java parses extension headers lazily, it later...

CVE-2026-21452 MessagePack-Java Vulnerable to Remote Denial of Service via Malicious .msgpack Model File Triggering Unbounded EXT Payload Allocation

MessagePack for Java is a serializer implementation for Java. A denial-of-service vulnerability exists in versions prior to 0.9.11 when deserializing .msgpack files containing EXT32 objects with attacker-controlled payload lengths. While MessagePack-Java parses extension headers lazily, it later...