CVE-2026-28292 Security Alert: CRITICAL Vulnerability

Urgent: CVE-2026-28292 requires immediate attention.

· 3 min read

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Executive Summary

A critical vulnerability (CVE-2026-28292) has been identified in the simple-git library, affecting versions from 3.15.0 onwards. This flaw allows attackers to execute arbitrary OS commands on the host machine due to improper handling of git protocol override arguments. Developers using simple-git in applications that pass user-controlled arguments are at immediate risk.

Immediate Action

  • Update simple-git to the patched version as soon as it is available.
  • Review and sanitize all user-controlled inputs to prevent the injection of unsafe git commands.
  • Consider rolling back to simple-git@3.14.0 or earlier until a fix is implemented.
  • Monitor for updates from the simple-git maintainers regarding a patch.
  • Isolate affected services to minimize exposure while remediation is in progress.
  • Review and audit your codebase for any use of simple-git that may expose the vulnerability.

Affected Versions

  • simple-git@>=3.15.0 vulnerable; upgrade to 3.33.0+ (TODO: insert actual patched version)

Resolution Guide

To patch the vulnerability, run the following commands:

npm install simple-git@3.33.0

For users of other package managers, replace with the appropriate command:

yarn add simple-git@3.33.0
pnpm add simple-git@3.33.0

To harden your configuration, ensure that user-controlled arguments are thoroughly validated and sanitized before being passed to any simple-git methods.

Example code fix snippet:

if (userArgs.some(arg => /PROTOCOL.ALLOW/i.test(arg))) {
    throw new Error('Unsafe git protocol argument detected!');
}

Detection & Verification

To check if your application is vulnerable, verify the installed version:

npm list simple-git

To verify the fix, ensure you have updated to the patched version:

npm list simple-git

Additionally, run a dependency audit to identify any instances of simple-git in your project:

npm audit

Risk and Impact

The vulnerability allows an attacker to execute arbitrary commands on the host machine by exploiting improperly sanitized user input. This could lead to full system compromise, data loss, or unauthorized access to sensitive information, especially in applications that utilize simple-git to handle git operations with user-controlled parameters.

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