GHSA-qpw4-5x99-6vjp

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    GHSA-qpw4-5x99-6vjp

    Published: 25 Jun 2026Last Modified: 7 Jul 2026

    Summary: golang.org/x/crypto: Invoking memory leak when rejecting channels can lead to DoS

    Details: An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.

    References: https://nvd.nist.gov/vuln/detail/CVE-2026-39827, https://cs.opensource.google/go/x/crypto, https://go.dev/cl/781320, https://go.dev/issue/35127, https://groups.google.com/g/golang-announce/c/a082jnz-LvI, https://pkg.go.dev/vuln/GO-2026-5016

    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