open 7.2.0 before 11.0.0 OS Command Injection via PowerShell on Windows

Summary

open 7.2.0 before 11.0.0 contains an OS command injection vulnerability that allows attackers to execute PowerShell code by supplying crafted URLs on Windows and WSL. Attackers can embed $(...) subexpressions in URLs, such as OAuth authorization_endpoint values from malicious MCP servers, which execute when index.js passes them unescaped to powershell -EncodedCommand.

Remediation

1. Inventory every sindresorhus open deployment, including staging.
2. Upgrade sindresorhus open to the fixed version for your release line, listed under Affected versions.
3. Confirm the running version after the upgrade.

References

• Patchhttps://github.com/anomalyco/opencode/commit/29f07e0c69ad8668e0e15b0eb54f2fcb342af98c
• Patchhttps://github.com/anomalyco/opencode/pull/51414
• Patchhttps://github.com/sindresorhus/open/commit/274d70446bf38a7b7d50b214dd3962ef8ea9320d
• Advisoryhttps://github.com/modelcontextprotocol/inspector/security/advisories/GHSA-q978-78c7-phqw
• Advisoryhttps://www.vulncheck.com/advisories/open-7.2.0-before-11.0.0-os-command-injection-via-powershell-on-windows
• Referencehttps://github.com/sindresorhus/open/blob/v10.2.0/index.js#L189-L203
• Referencehttps://github.com/sindresorhus/open/blob/v7.2.0/index.js#L60-L99
• Referencehttps://github.com/sindresorhus/open/releases/tag/v11.0.0