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    2 vulnerabilities found for msgpack-python by msgpack

    CVE-2026-57585 (GCVE-0-2026-57585)

    Vulnerability from nvd – Published: 2026-06-30 21:36 – Updated: 2026-07-01 14:54
    VLAI
    Title
    MessagePack: Out-of-bounds read/crash on Unpacker reuse after caught error
    Summary
    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 issue has been fixed in version 1.2.1.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    msgpack msgpack-python Affected: < 1.2.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-57585 (GCVE-0-2026-57585)

    Vulnerability from cvelistv5 – Published: 2026-06-30 21:36 – Updated: 2026-07-01 14:54
    VLAI
    Title
    MessagePack: Out-of-bounds read/crash on Unpacker reuse after caught error
    Summary
    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 issue has been fixed in version 1.2.1.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    msgpack msgpack-python Affected: < 1.2.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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