VULNERABILITY INTELLIGENCE

CVE-2021-34436

CVSS score9.8 CRITICAL
EPSS probability2.22%
CISA KEVNot currently listed
Published2021-09-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • emo@eclipse.org: CWE-22
  • nvd@nist.gov: CWE-22

Primary references