CVE-2021-34435CWE-942

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

published September 1, 2021

CVSS
—
EPSS
1%
Percentile
47.8
In the wild
Unconfirmed
What it is

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..

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00595 · 47.8th percentile
Weakness
CWE-942 · Permissive Cross-domain Security Policy with Untrusted Domains
Published
2021-09-01T17:20Z
EPSS history
Timeline
  • 01 SEP 17:20Z
    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
    cvelistv5