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A critical OS Command Injection vulnerability has been discovered in mcp-remote, where the system is vulnerable to crafted input returned by a malicious MCP server through the authorization_endpoint response URL.
Successful exploitation of this flaw allows attackers to execute remote system commands, potentially leading to full system compromise, data leakage, or privilege escalation. The attack requires minimal complexity and only some user interaction.
mcp-remote
Affected Version: All versions before patch 607b226a
Remediation: Apply the latest patch: commit 607b226a Avoid connecting to untrusted MCP servers until patch is applied. Monitor network for suspicious callback or command injection attempts.
Commit 607b226a
Avoid connecting to unknown or untrusted MCP servers
Input sanitization and validation. Server trust verification. Logging and monitoring.
Monitor for abnormal system command executions. Analyze logs for suspicious URL responses.
Not specified
7/8/2025
No references provided
No affected organizations specified
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