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    CVE-2025-61729

    Within HostnameError.Error(), when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the error string is constructed by repeated string concatenation, leading to quadratic runtime. Therefore, a certificate provided by a malicious actor can result in excessive resource consumption.

    Published:Dec 2, 2025
    Last Modified:Dec 19, 2025
    EPS:Dec 2, 2025
    EPSS Score:0.00012
    CVSS Score:7.5

    Affected Products

    Vendor
    Go Standard Library
    Product
    Crypto Tls
    Vendor
    Golang
    Product
    Go

    Exploits

    No exploit reference

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    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