High severity · published Jun 18, 2026
CVE-2026-44691
In Eclipse Theia versions prior to 1.69.0, custom task definitions in workspace files (e.g
8.8
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ET
Eclipse Theia · Eclipse Foundation
before 1.69.0 · source: vendor
TH
Theia · Eclipse
before 1.69.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44691
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44691
Patch
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/116
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