CVE-2026-44691: Eclipse Theia

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

In Eclipse Theia versions prior to 1.69.0, custom task definitions in workspace files (e.g. .theia/tasks.json, .vscode/tasks.json) could be executed without requiring workspace trust. An attacker could craft a malicious repository that, when cloned and opened in Theia, leads to execution of arbitrary commands with the user's privileges. In combination with AI chat features and a workspace .theia/settings.json that disabled tool confirmation, this could be triggered automatically by sending a message in the AI chat.

Affected products

• Eclipse Theia: before 1.69.0 (fixed in 1.69.0)

Published 2026-06-18. Last modified 2026-06-22.