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VULNERABILITIES

CVE-2021-34436 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugs.eclipse.org/bugs/show_bug.cgi?id=563174 CVEVendor Advisory
https://bugs.eclipse.org/bugs/show_bug.cgi?id=563174 [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')[email protected]
CWE-611Improper Restriction of XML External Entity Reference[email protected]
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')[email protected]
CWE-611Improper Restriction of XML External Entity Reference[email protected]

Affected Products

ProductVersions
eclipse theia
>= 0.1.1, <= 0.2.0

CPE

  • cpe:2.3:a:eclipse:theia:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-34436
NVD Published Date:
Sep 2, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-34436 Details - Not Deferred