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.
{ "nvd_published_at": "2021-09-01T18:15:00Z", "github_reviewed_at": "2021-09-02T17:12:13Z", "severity": "HIGH", "github_reviewed": true, "cwe_ids": [ "CWE-346", "CWE-668", "CWE-942" ] }