GO-2025-4007

    Dashboard / Vulnerabilities / GO-2025-4007

    GO-2025-4007

    Published: 29 Oct 2025Last Modified: 15 May 2026

    Summary: Quadratic complexity when checking name constraints in crypto/x509

    Details: Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.

    References: https://go.dev/issue/75681, https://go.dev/cl/709854, https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI

    Affected packages

    Package

    Name: stdlib

    Purl: pkg:golang/stdlib

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.24.9

    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