CVE-2021-34435
Remote code execution in Eclipse Theia
8.8
HIGH
CVSS 3.1
EPSS 0.12%
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.
How to fix CVE-2021-34435
To remediate CVE-2021-34435, upgrade the affected package to a fixed version below.
- —upgrade to 1.9.0 or later
Is CVE-2021-34435 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 0.3.9, < 1.9.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |