GO-2026-5013

    Dashboard / Vulnerabilities / GO-2026-5013

    GO-2026-5013

    Published: 22 May 2026Last Modified: 12 Aug 2026

    Summary: Invoking byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh

    Details: An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.

    References: https://go.dev/issue/79561, https://groups.google.com/g/golang-announce/c/a082jnz-LvI, https://go.dev/cl/781620

    Affected packages

    Package

    Name: golang.org/x/crypto

    Purl: pkg:golang/golang.org/x/crypto

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -0.52.0

    Affected versions

    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