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

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.

9.2 CRITICALEPSS 0.37%Not in KEVNVD: Analyzed

OverviewAffected ProductsReferences
NVD CVE.org

Overview

Severity

ScoreSeverityVersionVector String
9.2CRITICAL4.0GitHub_M (CNA)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
9.8CRITICAL3.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CVE ID
CVE-2026-102828
Status
Analyzed
Assigner (CNA)
GitHub_M
Published
Sep 29, 2026
Last modified
2026-10-08 20:03 UTC
Weaknesses
  • CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
  • CWE-184 · Incomplete List of Disallowed Inputs

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-09 09:19 UTC.