{"id":"CVE-2026-44691","aliases":["EUVD-2026-37901","GHSA-g9jw-92q7-g7fj","UBUNTU-CVE-2026-44691"],"status":"published","title":"[Eclipse Theia] Arbitrary Command Execution via Untrusted Workspace Task Definitions","description":"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.","severity":{"version":"4.0","score":8.4,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00408,"percentile":0.35606,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-829"],"published":"2026-06-18T14:35:25Z","modified":"2026-10-28T02:30:30Z","fixes":[{"ecosystem":"npm","package":"@theia/debug","fixed_in":["1.69.0"],"sources":["ghsa","osv"]},{"ecosystem":"npm","package":"@theia/task","fixed_in":["1.69.0"],"sources":["ghsa","osv"]},{"ecosystem":"npm","package":"@theia/workspace","fixed_in":["1.69.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@theia/debug","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.69.0"}]}]},{"source":"ghsa","ecosystem":"npm","package":"@theia/task","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.69.0"}]}]},{"source":"ghsa","ecosystem":"npm","package":"@theia/workspace","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.69.0"}]}]},{"source":"osv","ecosystem":"npm","package":"@theia/debug","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.69.0"}]}]},{"source":"osv","ecosystem":"npm","package":"@theia/task","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.69.0"}]}]},{"source":"osv","ecosystem":"npm","package":"@theia/workspace","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.69.0"}]}]}],"products":[{"vendor":"eclipse","product":"theia"},{"vendor":"eclipse foundation","product":"eclipse theia"},{"vendor":"the eclipse foundation","product":"eclipse theia"}],"references":[{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/116","tags":["Patch","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44691","tags":["advisory"]},{"url":"https://github.com/eclipse-theia/theia/issues/16889","tags":["web"]},{"url":"https://github.com/eclipse-theia/theia/pull/16917","tags":["web"]},{"url":"https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/331","tags":["web"]},{"url":"https://github.com/advisories/GHSA-g9jw-92q7-g7fj"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44691.json","tags":["advisory"]},{"url":"https://github.com/eclipse-theia/theia","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-44691","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-44691","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-44691","description":"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.","status":"published","published":"2026-06-18T14:35:25.486Z","modified":"2026-06-19T03:55:44.974Z","cvss":[{"version":"4.0","score":8.4,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-829"],"updated_at":"2026-11-02T13:42:49.132798Z"}],"euvd":[{"id":"EUVD-2026-37901","description":"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.","status":"published","published":"2026-06-18T14:35:25Z","modified":"2026-06-19T03:55:44Z","cvss":[{"version":"4.0","score":8.4,"vector":"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","level":"high"}],"updated_at":"2026-11-02T18:20:36.276608Z"}],"ghsa":[{"id":"GHSA-g9jw-92q7-g7fj","title":"[Eclipse Theia] Arbitrary Command Execution via Untrusted Workspace Task Definitions","description":"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.","status":"published","published":"2026-06-18T18:35:23Z","modified":"2026-06-19T19:20:21Z","cvss":[{"version":"4.0","score":8.4,"vector":"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","level":"high"}],"cwes":["CWE-829"],"updated_at":"2026-11-02T14:40:30.53004Z"}],"nvd":[{"id":"CVE-2026-44691","description":"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.","status":"published","published":"2026-06-18T16:16:54.097Z","modified":"2026-10-26T11:10:00.157Z","cvss":[{"version":"4.0","score":8.4,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-829"],"updated_at":"2026-11-02T14:12:24.912854Z"}],"osv":[{"id":"CVE-2026-44691","description":"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.","status":"published","published":"2026-06-18T14:35:25.486Z","modified":"2026-10-28T02:30:30.323754143Z","cvss":[{"version":"4.0","score":8.4,"vector":"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","level":"high"}],"cwes":["CWE-829"],"updated_at":"2026-11-02T15:45:05.172514Z"},{"id":"GHSA-g9jw-92q7-g7fj","title":"[Eclipse Theia] Arbitrary Command Execution via Untrusted Workspace Task Definitions","description":"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.","status":"published","published":"2026-06-18T18:35:23Z","modified":"2026-09-10T03:51:08.792591255Z","cvss":[{"version":"4.0","score":8.4,"vector":"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","level":"high"}],"cwes":["CWE-829"],"updated_at":"2026-11-02T15:46:47.472172Z"},{"id":"UBUNTU-CVE-2026-44691","description":"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.","status":"withdrawn","published":"2026-06-18T16:16:00Z","modified":"2026-10-05T07:30:02.583282868Z","cvss":[{"version":"4.0","score":8.4,"vector":"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","level":"high"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:26.396868Z"}]}}