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CVE-2026-102828— simple-git unsafe-operation guard does not block trailer command configuration

Quick assessment

Affected
steveukx git-js
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

simple-git, an interface for running git commands in any node.js application, enables applications to execute Git operations from JavaScript. From 3.15.0 until 4.0.1, the default blockUnsafeOperationsPlugin does not classify trailer.<token>.cmd as unsafe confi

CVSS 9.2 · Critical
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I. Basic Information for CVE-2026-102828

Vulnerability Information

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Vulnerability Title
simple-git unsafe-operation guard does not block trailer command configuration
Source: CVE Program / CVE List V5
Vulnerability Description
simple-git, an interface for running git commands in any node.js application, enables applications to execute Git operations from JavaScript. From 3.15.0 until 4.0.1, the default blockUnsafeOperationsPlugin does not classify trailer.<token>.cmd as unsafe configuration. An application that passes attacker-controlled values through SimpleGitOptions.config or inline -c arguments can therefore allow Git to invoke an attacker-selected shell command when git interpret-trailers processes the configured trailer. The command executes with the operating-system identity and permissions of the Node.js process. This issue is fixed in 4.0.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
steveukx git-js >= 3.15.0, < 4.0.1 -

II. Public POCs for CVE-2026-102828

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III. Intelligence Information for CVE-2026-102828

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Other References for CVE-2026-102828 (4)

Same Patch Batch · steveukx · 2026-09-29 · 4 CVEs total

CVE-2026-102829 9.2 CRITICAL simple-git: `VISUAL` editor environment variable is omitted from unsafe editor detection
CVE-2026-102826 8.1 HIGH simple-git allows command execution through unblocked Git configuration includes
CVE-2026-102827 8.1 HIGH simple-git: unsafe-operations plugin bypass via git long-option abbreviation (--receive-p/

IV. Related Vulnerabilities

Same product: git-js
Same vendor: steveukx
Same weakness: CWE-78

V. Comments for CVE-2026-102828

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