{
"id": "GHSA-g9jw-92q7-g7fj",
"aliases": [
"CVE-2026-44691"
],
"details": "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.",
"summary": "[Eclipse Theia] Arbitrary Command Execution via Untrusted Workspace Task Definitions",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.69.0"
}
]
}
],
"package": {
"name": "@theia/debug",
"ecosystem": "npm"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.69.0"
}
]
}
],
"package": {
"name": "@theia/task",
"ecosystem": "npm"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.69.0"
}
]
}
],
"package": {
"name": "@theia/workspace",
"ecosystem": "npm"
}
}
],
"modified": "2026-06-19T19:20:20Z",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"published": "2026-06-18T18:35:23Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44691",
"type": "ADVISORY"
},
{
"url": "https://github.com/eclipse-theia/theia/issues/16889",
"type": "WEB"
},
{
"url": "https://github.com/eclipse-theia/theia/pull/16917",
"type": "WEB"
},
{
"url": "https://github.com/eclipse-theia/theia",
"type": "PACKAGE"
},
{
"url": "https://gitlab.eclipse.org/security/cve-assignment/-/work_items/116",
"type": "WEB"
},
{
"url": "https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/331",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-829"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2026-06-18T16:16:54Z",
"github_reviewed_at": "2026-06-19T19:20:20Z"
}
}