RCE in Cyanheads Git-Mcp-Server
CVE-2025-53107
@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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.231 (97.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Cyanheads Git-mcp-server — versions < 2.1.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-53107?
- CVE-2025-53107 is a high-severity vulnerability in Cyanheads Git-Mcp-Server, classified under Command Injection. CVSS score: 7.5/10. Published 2025-07-01.
- How severe is CVE-2025-53107?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-53107 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.