---
id: CVE-2026-102828
title: >-
  simple-git, an interface for running git commands in any node.js application,
  enables applications to execute Git operations from JavaScript
summary: >-
  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.<tok…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
  - CWE-184
vendor: simple-git_project
product: simple-git
affected:
  - 'simple-git >= 3.15.0, < 4.0.1'
patched:
  - simple-git 4.0.1
published: '2026-09-29'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T20:03:07.760'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102828'
references:
  - url: >-
      https://github.com/steveukx/git-js/commit/d762810c13b331ff1e5eb24c0b434646d2a8d1b3
    label: security-advisories@github.com
  - url: 'https://github.com/steveukx/git-js/pull/1198'
    label: security-advisories@github.com
  - url: 'https://github.com/steveukx/git-js/releases/tag/simple-git@4.0.1'
    label: security-advisories@github.com
  - url: 'https://github.com/steveukx/git-js/security/advisories/GHSA-x6jw-m9v5-85vh'
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102828'
  - url: 'https://github.com/advisories/GHSA-x6jw-m9v5-85vh'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102828.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-102828'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2543509'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-102828'
tags:
  - nvd
  - cve.org
  - ghsa
  - npm
  - csaf
  - vex
  - red-hat
epss: 0.0037
epssPercentile: 0.30737
aliases:
  - GHSA-x6jw-m9v5-85vh
ecosystem: npm
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-30T20:08:07.142494Z'
scores:
  nvd: 9.8
  cna: 9.2
  vendor: 8.1
ingestedAt: '2026-09-29T19:44:04.149Z'
---

## Overview

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.

## Affected

- `simple-git >= 3.15.0, < 4.0.1`

## Remediation

Upgrade past the affected range:

- `simple-git 4.0.1`

## Package advisory (CVE-2026-102828)

Affected packages:

- `simple-git >= 3.15.0, < 4.0.1`

Patched in:

- `simple-git 4.0.1`

Source: https://github.com/advisories/GHSA-x6jw-m9v5-85vh

## Vendor advisories

- **Red Hat VEX** · Important · affected: Red Hat Build of Keycloak, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Build of Keycloak, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102828.json)