Eclipse Theia up to 1.68.x Repository theia/tasks.json inclusion of functionality from untrusted control sphere

Summaryinfo

A vulnerability was found in Eclipse Theia up to 1.68.x and classified as problematic. Affected is an unknown function of the file theia/tasks.json of the component Repository Handler. Executing a manipulation can lead to inclusion of functionality from untrusted control sphere. This vulnerability is registered as CVE-2026-44691. The attack needs to be launched locally. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Eclipse Theia up to 1.68.x. This vulnerability affects an unknown code of the file theia/tasks.json of the component Repository Handler. The manipulation with an unknown input leads to a inclusion of functionality from untrusted control sphere vulnerability. The CWE definition for the vulnerability is CWE-829. The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published by Piotr Ryciak. The advisory is available at gitlab.eclipse.org. This vulnerability was named CVE-2026-44691 since 05/22/2026. The exploitation appears to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit.

By approaching the search of inurl:theia/tasks.json it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 1.69.0 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Eclipse

Name

• Theia

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31
• 1.32
• 1.33
• 1.34
• 1.35
• 1.36
• 1.37
• 1.38
• 1.39
• 1.40
• 1.41
• 1.42
• 1.43
• 1.44
• 1.45
• 1.46
• 1.47
• 1.48
• 1.49
• 1.50
• 1.51
• 1.52
• 1.53
• 1.54
• 1.55
• 1.56
• 1.57
• 1.58
• 1.59
• 1.60
• 1.61
• 1.62
• 1.63
• 1.64
• 1.65
• 1.66
• 1.67
• 1.68

License

• open-source

CPE 2.3info

• 🔒
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CPE 2.2info

• 🔒
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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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