CVE-2026-102828

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.

• CWE-78
• CWE-184

• https://github.com/steveukx/git-js/commit/d762810c13b331ff1e5eb24c0b434646d2a8d1b3Patch
• https://github.com/steveukx/git-js/pull/1198Patch
• https://github.com/steveukx/git-js/releases/tag/simple-git@4.0.1Release Notes
• https://github.com/steveukx/git-js/security/advisories/GHSA-x6jw-m9v5-85vhMitigation, Vendor Advisory

Published

Sep 29, 2026

Last Modified

Oct 8, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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