GO-2026-4980

    Dashboard / Vulnerabilities / GO-2026-4980

    GO-2026-4980

    Published: 7 May 2026Last Modified: 31 Aug 2026

    Summary: Escaper bypass leads to XSS in html/template

    Details: If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the <script> block.

    References: https://go.dev/issue/78981, https://go.dev/cl/771180, https://groups.google.com/g/golang-announce/c/qcCIEXso47M

    Affected packages

    Package

    Name: stdlib

    Purl: pkg:golang/stdlib

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.25.10

    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
    GO-2026-4980 | CVE-DB