Arbitrary Command Injection Affecting simple-git package, versions <4.0.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-JS-SIMPLEGIT-20335540
- published30 Sept 2026
- disclosed29 Sept 2026
- creditbhaswanthc
Introduced: 29 Sep 2026
NewCVE-2026-102826 (opens in a new tab)How to fix?
Upgrade simple-git to version 4.0.0 or higher.
Overview
simple-git is a light weight interface for running git commands in any node.js application.
Affected versions of this package are vulnerable to Arbitrary Command Injection via the detect-vulnerable-config-writes path in the argv-parser package, where unsanitised arguments passed to git commands allow an attacker to inject arbitrary options through abbreviated flag handling. Because git accepts abbreviated long options by default, a remote attacker can supply a truncated flag that resolves to a dangerous option (such as --upload-pack) and achieve arbitrary command execution on the host running the library.