CVE-2021-34436

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    CVE-2021-34436

    Published: 2 Sept 2021Last Modified: 7 Aug 2026

    Summary:

    Details: In Eclipse Theia 0.1.1 to 0.2.0, it is possible to exploit the default build to obtain remote code execution (and XXE) via the theia-xml-extension. This extension uses lsp4xml (recently renamed to LemMinX) in order to provide language support for XML. This is installed by default.

    References: https://bugs.eclipse.org/bugs/show_bug.cgi?id=563174

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 515e23db9dc9fb856bffae313a09d3fbae336328
    Fixed -None

    Affected versions

    v0.2.0

    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
    CVE-2021-34436 | CVE-DB