GO-2026-6809

    Dashboard / Vulnerabilities / GO-2026-6809

    GO-2026-6809

    Published: 21 Oct 2026Last Modified: 29 Oct 2026

    Summary: Distrust compromised intermediate certificates in crypto/x509

    Details: 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.

    References: https://go.dev/cl/851047, https://go.dev/issue/82345, https://groups.google.com/g/golang-announce/c/66pojueaQek

    Affected packages

    Package

    Name: stdlib

    Purl: pkg:golang/stdlib

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.26.10

    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