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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-19884 Detail

Description

In Eclipse Theia versions up to and including 1.69.0, opening a folder starts source control integration without requiring the user to trust the folder first. This affects applications built on Theia that include the git integration, such as the Theia IDE. Both Theia's own `@theia/git` extension and the builtin VS Code `git` extension run git commands such as `git status` as soon as a repository is detected. Since git honors repository-local configuration, a folder containing an attacker-controlled `.git/config` with `core.fsmonitor` (or a comparable hook-like setting) causes the configured command to be executed. The configuration can be delivered by burying a bare repository inside a regular repository (OVE-20210718-0001), so cloning an attacker-supplied repository and opening it in a Theia-based application is sufficient to execute arbitrary commands with the privileges of the user, without any confirmation prompt. As of 1.70.0, plugins that declare `capabilities.untrustedWorkspaces.supported: false`, which includes the builtin git extension, are no longer loaded or activated in an untrusted workspace, and the deprecated `@theia/git` extension has been removed, so no git command is executed against an untrusted folder.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Eclipse Foundation
CVSS-B 8.4 HIGH
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

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/eclipse-theia/theia/pull/16809 Eclipse Foundation
https://github.com/eclipse-theia/theia/pull/17098 Eclipse Foundation
https://github.com/eclipse-theia/theia/pull/17148 Eclipse Foundation
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/231 Eclipse Foundation
https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/175 Eclipse Foundation

Weakness Enumeration

CWE-ID CWE Name Source
CWE-15 External Control of System or Configuration Setting Eclipse Foundation  
CWE-829 Inclusion of Functionality from Untrusted Control Sphere Eclipse Foundation  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-19884
NVD Published Date:
08/14/2026
NVD Last Modified:
08/14/2026
Source:
Eclipse Foundation