CVE-2021-34435: High severity eclipse theia vulnerability
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 Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is CVE-2021-34435?
CVE-2021-34435 is a vulnerability in Eclipse Theia 0.3.9 to 1.8.1 that allows a previewed malicious HTML file to trigger remote code execution (RCE).
How does the mini-browser extension in Eclipse Theia work?
The mini-browser extension in Eclipse Theia allows users to preview HTML files in an iframe inside the IDE.
Is CVE-2021-34435 only exploitable if a user previews a malicious file?
Yes, the exploit in CVE-2021-34435 only occurs if a user previews a malicious HTML file.
What is the severity of CVE-2021-34435?
CVE-2021-34435 has a severity rating of 8.8 (high).
How can I fix CVE-2021-34435?
To fix CVE-2021-34435, it is recommended to update Eclipse Theia to a version higher than 1.8.1.