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    CVE-2026-39823

    CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a <meta> tag's <content> attribute. If the URL content were to insert ASCII whitespaces around the '=' rune inside of the <content> attribute, the escaper would fail to similarly escape it, leading to XSS.

    Published:May 7, 2026
    Last Modified:May 13, 2026
    EPS:May 7, 2026
    EPSS Score:0.00014
    CVSS Score:6.1

    Affected Products

    Vendor
    Go Standard Library
    Product
    Html/template
    Vendor
    Golang
    Product
    Go

    Exploits

    No exploit reference

    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