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    CVE-2026-111943

    On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in crypto/x509 to return an error when calling Verify with any of the known intermediate certificates that are no longer considered to be trustworthy.

    Published:Oct 20, 2026
    Last Modified:Oct 30, 2026
    EPS:Oct 21, 2026
    EPSS Score:0.00299
    CVSS Score:6.8

    Affected Products

    Vendor
    Go Standard Library
    Product
    Crypto/x509
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Hummingbird

    Exploits

    https://github.com/andersundsehr/ca-trust-audithttps://github.com/BlackthornYugen/tiny-key-s-serverhttps://github.com/majiayu000/trustsweephttps://github.com/phpc0de/CVE-2026-111943-Remediatorhttps://github.com/Xowap/i-can-count-to-four

    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