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    CVE-2026-32284

    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.

    Published:Mar 26, 2026
    Last Modified:Jun 3, 2026
    EPS:Mar 26, 2026
    EPSS Score:0.00062
    CVSS Score:7.5

    Affected Products

    Vendor
    Shamaton
    Product
    Msgpack

    Exploits

    https://securityinfinity.com/research/shamaton-msgpack-oob-panic-fixext-dos-2026

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-100 Overflow Buffers
    CAPEC-256 SOAP Array Overflow
    CAPEC-540 Overread Buffers

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High