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CVE-2021-34435

HIGH CVSS: 8.8 Published: 2021-09-01 Modified: 2026-06-17

Description

In Eclipse Theia 0.3.9 to 1.8.1, the "mini-browser" extension allows a user to preview HTML files in an iframe inside the IDE. But with the way it is made it is possible for a previewed HTML file to trigger an RCE. This exploit only happens if a user previews a malicious file..

Affected Platforms

Eclipse Theia

Weakness Type

CWE-942, CWE-346

References