PT-2026-50690 · Eclipse Foundation · Eclipse Theia

Piotr Ryciak · Published 2026-06-18 · Updated 2026-06-18 · CVE-2026-44691

Mitre

CVSS v4.0

8.4

High

Base vector

AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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.

Fix

Weakness Enumeration

CWE-829

Related Identifiers

CVE-2026-44691

Affected Products

Eclipse Theia

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-44691 · Security Note
• https://gitlab.eclipse.org/security/cve-assignment/-/work_items/116 · Note