Vulnerability · Published Sep 1, 2021 · Assigned by eclipse
CVE-2021-34435
High 8.8
In plain English
A high-severity security flaw in Eclipse Theia from The Eclipse Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)8.8High
Exploit odds (30 days)0.6%top 51.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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..
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @theia/mini-browser | 1.9.0 | GHSA-v9w2-v7j9-rjpr |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Eclipse Foundation | Eclipse Theia | 0.3.9 – before unspecifiedunspecified – through 1.8.1 |
Weakness: CWE-942
References
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=568018 x_refsource_CONFIRM