CVE-2025-53107 @cyanheads/git-mcp-server vulnerable to command injection in several tools

What is CVE-2025-53107?

CVE-2025-53107 is a high-severity command injection vulnerability in cyanheads git-mcp-server, published on 1 Jul 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

@cyanheads/git-mcp-server is an MCP server designed to interact with Git repositories. Prior to version 2.1.5, there is a command injection vulnerability caused by the unsanitized use of input parameters within a call to child_process.exec, enabling an attacker to inject arbitrary system commands. Successful exploitation can lead to remote code execution under the server process's privileges. The server constructs and executes shell commands using unvalidated user input directly within command-line strings. This introduces the possibility of shell metacharacter injection (|, >, &&, etc.). An MCP Client can be instructed to execute additional actions for example via indirect prompt injection when asked to read git logs. This issue has been patched in version 2.1.5.

Weakness: CWE-77

Which versions are affected by CVE-2025-53107?

2 open source packages ship an affected version, including @cyanheads/git-mcp-server.

How do I fix CVE-2025-53107?

Upgrade @cyanheads/git-mcp-server to 2.1.5 or later.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2025-53107 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-53107 exists.

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-3q26-f695-pp76.