CVE-2021-41038: Eclipse Theia

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

In versions of the @theia/plugin-ext component of Eclipse Theia prior to 1.18.0, Webview contents can be hijacked via postMessage().

Affected products

• Eclipse Theia: before 1.18.0 (fixed in 1.18.0)

Published 2021-11-10. Last modified 2026-06-17.