CVE-2021-34435

Public Exploit

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..

Categories

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.15%
Vendor Advisory eclipse.org
Affected: The Eclipse Foundation Eclipse Theia
Published at:
Updated at:

References

Link Tags
https://bugs.eclipse.org/bugs/show_bug.cgi?id=568018 exploit patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-34435?
CVE-2021-34435 has been scored as a high severity vulnerability.
How to fix CVE-2021-34435?
To fix CVE-2021-34435, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34435 being actively exploited in the wild?
It is possible that CVE-2021-34435 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34435?
CVE-2021-34435 affects The Eclipse Foundation Eclipse Theia.
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