CVE-2021-34435

HighCVSS 8.8/10Last modified Jun 17, 2026

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..

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-942CWE-346

Affected software

No affected versions have been published.

Timeline

Published
Sep 1, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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