Remote Code Execution Vulnerability in webviews

VS Code - Remote Code Execution Vulnerability

A remote code execution vulnerability exists in VS Code 1.119.0 and earlier versions with the internal protocol webviews use to load the VS Code controlled root webview content. This could result in untrusted scripts being run inside the webview

Patches

The fix is available starting with VS Code 1.119.1. The fix (https://github.com/microsoft/vscode/commit/1dbe28533fe4204dcd3c3e30a05e22c6ba307145) mitigates this attack by making sure the correctly sized buffer is passed to the webview protocol provider

Workarounds

Do not open webviews that can load untrusted content

References

• The patch for this can be found at https://github.com/microsoft/vscode/commit/1dbe28533fe4204dcd3c3e30a05e22c6ba307145
• MSRC details for this can be found at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41611