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CVE-2026-4496— sigmade Git-MCP-Server gitUtils.ts child_process.exec os command injection

CVSS 5.3 · Medium EPSS 0.37% · P59
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I. Basic Information for CVE-2026-4496

Vulnerability Information
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Vulnerability Title
sigmade Git-MCP-Server gitUtils.ts child_process.exec os command injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was found in sigmade Git-MCP-Server up to 785aa159f262a02d5791a5d8a8e13c507ac42880. Affected by this vulnerability is the function child_process.exec of the file src/gitUtils.ts of the component show_merge_diff/quick_merge_summary/show_file_diff. The manipulation results in os command injection. The attack must be initiated from a local position. The exploit has been made public and could be used. This product operates on a rolling release basis, ensuring continuous delivery. Consequently, there are no version details for either affected or updated releases. It is advisable to implement a patch to correct this issue. The vendor was contacted early about this disclosure but did not respond in any way.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Git MCP Server 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Git MCP Server是Casey Hand个人开发者的一个MCP服务器。 Git MCP Server存在操作系统命令注入漏洞，该漏洞源于组件show_merge_diff/quick_merge_summary/show_file_diff的文件src/gitUtils.ts中函数child_process.exec存在os命令注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
sigmadeGit-MCP-Server 785aa159f262a02d5791a5d8a8e13c507ac42880 -

II. Public POCs for CVE-2026-4496

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III. Intelligence Information for CVE-2026-4496

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IV. Related Vulnerabilities

Same product: Git-MCP-Server
Same weakness: CWE-78

V. Comments for CVE-2026-4496

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