In Eclipse Theia versions prior to 1.69.0, custom task definitions in workspace files…
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-829.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Eclipse Foundation | Eclipse Theia | before 1.69.0 | 1.69.0 | Patch available | CNA |
| — | @theia/debug (npm) | before 1.69.0 | 1.69.0 | Patch available | GHSA-g9jw-92q7-g7fj |
| — | @theia/task (npm) | before 1.69.0 | 1.69.0 | Patch available | GHSA-g9jw-92q7-g7fj |
| — | @theia/workspace (npm) | before 1.69.0 | 1.69.0 | Patch available | GHSA-g9jw-92q7-g7fj |
- Eclipse Theia VendorEclipse Foundation Affected before 1.69.0 Fixed in 1.69.0 Patch available CNA
- @theia/debug (npm) Vendor— Affected before 1.69.0 Fixed in 1.69.0 Patch available GHSA-g9jw-92q7-g7fj
- @theia/task (npm) Vendor— Affected before 1.69.0 Fixed in 1.69.0 Patch available GHSA-g9jw-92q7-g7fj
- @theia/workspace (npm) Vendor— Affected before 1.69.0 Fixed in 1.69.0 Patch available GHSA-g9jw-92q7-g7fj
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eclipse:theia:*:*:*:*:*:*:*:* | before 1.69.0 | Vulnerable | Eclipse Foundation |
- cpe:2.3:a:eclipse:theia:*:*:*:*:*:*:*:* Versions before 1.69.0 Vulnerable ·Eclipse Foundation
Remediation
- Fix · CNA Eclipse Theia (Eclipse Foundation) Fixed in 1.69.0
- Fix · GHSA-g9jw-92q7-g7fj @theia/debug (npm) Fixed in 1.69.0 Advisory →
- Fix · GHSA-g9jw-92q7-g7fj @theia/task (npm) Fixed in 1.69.0 Advisory →
- Fix · GHSA-g9jw-92q7-g7fj @theia/workspace (npm) Fixed in 1.69.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-44691
- 2026-10-03 Alias added: GHSA-g9jw-92q7-g7fj
References
More Eclipse Foundation Theia vulnerabilities
- TI-2026-12294 Prototype pollution in Eclipse Theia CVSS 4.0MEDIUM 5.7
- TI-2021-13470 Path traversal in Eclipse Theia CVSS 3.1CRITICAL 9.8
- TI-2020-16550 Cross-site scripting in Eclipse Theia CVSS 3.1CRITICAL 9.6
- TI-2026-10807 Path traversal in Eclipse Theia CVSS 3.1HIGH 7.5
- TI-2026-44283 Information disclosure in Eclipse Theia CVSS 3.1HIGH 7.5
- TI-2026-42788 Path traversal in Eclipse Theia CVSS 3.1HIGH 8.8
Sources
- CVE-2026-44691 · CVE Program
- CVE-2026-44691 · NVD
- FIRST EPSS
- GHSA-g9jw-92q7-g7fj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences