SAP yeoman-ui up to 1.25.1 Workspace Settings settings.json child_process.execSync installationLocation os command injection

Summaryinfo

A vulnerability was found in SAP yeoman-ui up to 1.25.1. It has been declared as critical. This affects the function child_process.execSync of the file settings.json of the component Workspace Settings. Executing a manipulation of the argument installationLocation can lead to os command injection. This vulnerability is registered as CVE-2026-89116. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in SAP yeoman-ui up to 1.25.1. This vulnerability affects the function child_process.execSync of the file settings.json of the component Workspace Settings. The manipulation of the argument installationLocation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The affected code used child_process.execSync with a shell string for generator installation and uninstallation. This allowed an attacker to execute arbitrary OS commands with the developer's privileges by manipulating the ApplicationWizard.installationLocation VS Code workspace configuration value. Because the value was passed directly to the shell without sanitisation, a malicious workspace repository could craft a settings.json that injects OS commands when a developer opens the project and triggers a generator installation.

The advisory is available at github.com. This vulnerability was named CVE-2026-89116 since 09/11/2026. The exploitation appears to be easy. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 10/13/2026). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

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

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• SAP

Name

• yeoman-ui

Version

• 1.25.0
• 1.25.1

License

• commercial

Website

• Vendor: https://www.sap.com/

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