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

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6.9	$0-$5k	0.00

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. The vulnerability scanner Nessus provides a plugin with the ID 321783 (Linux Distros Unpatched Vulnerability : CVE-2026-44691), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.69.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (321783) and EUVD (EUVD-2026-37901). 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

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 6.9

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Inclusion of functionality from untrusted control sphere
CWE: CWE-829
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined
Google Hack: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 321783
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-44691

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Theia 1.69.0

Timelineinfo

05/22/2026 CVE reserved
06/18/2026 +27 days Advisory disclosed
06/18/2026 +0 days VulDB entry created
06/24/2026 +6 days VulDB entry last update

Sourcesinfo

Advisory: gitlab.eclipse.org
Researcher: Piotr Ryciak
Status: Confirmed

CVE: CVE-2026-44691 (🔒)
GCVE (CVE): GCVE-0-2026-44691
GCVE (VulDB): GCVE-100-372250
EUVD: 🔒

Entryinfo

Created: 06/18/2026 19:53
Updated: 06/24/2026 11:52
Changes: 06/18/2026 19:53 (68), 06/19/2026 08:17 (1), 06/22/2026 05:14 (2), 06/24/2026 11:52 (11)
Complete: 🔍
Cache ID: 216::103

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

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