CVE-2026-102826 simple-git allows command execution through unblocked Git configuration includes
Attackers can execute arbitrary commands via Git configuration includes in simple-git if applications pass untrusted custom arguments to clone operations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-102826?
CVE-2026-102826 is a high-severity command injection vulnerability in steveukx git-js, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
simple-git, an interface for running git commands in any node.js application, enables applications to execute Git operations from JavaScript. Prior to 4.0.0, the default blockUnsafeOperationsPlugin does not completely reject configuration includes supplied through customArgs to git.clone(). The missing include.path classification permits Git to load an attacker-controlled configuration file, and the initial remediation does not cover includeIf.<condition>.path, allowing the same file-loading primitive through a conditional include. A loaded configuration can set an executable Git option such as core.sshCommand, which Git invokes during the clone operation with the privileges of the Node.js process. Exploitation requires the application to pass attacker-influenced custom arguments and requires an attacker-controlled file that the process can read. This issue is fixed in 4.0.0.
Which versions are affected by CVE-2026-102826?
2 open source packages ship an affected version, including simple-git. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
simple-git npm | All versions | 4.0.0 |
simple-git npm | All versions | 4.0.0 |
Products include Simple-Git Project Simple-Git.
How do I fix CVE-2026-102826?
Upgrade simple-git to 4.0.0 or later.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-102826 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-102826 exists.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in steveukx git-js
- CVE-2026-28292 simple-git has blockUnsafeOperationsPlugin bypass via case-insensitive protocol.allow config key that enables RCE
- CVE-2026-102828 simple-git unsafe-operation guard does not block trailer command configuration
- CVE-2026-6951 simple-git is vulnerable to Remote Code Execution
- CVE-2026-102827 simple-git: unsafe-operations plugin bypass via git long-option abbreviation (--receive-p/--exe) -> command execution (residual of CVE-2026-28291)
- CVE-2026-28291 simple-git has Command Execution via Option-Parsing Bypass
Sources
Also known as CLEANSTART-2026-OG21794, CLEANSTART-2026-UG74776, GHSA-g4wm-2vf7-vfgr, MINI-cj9q-q5vq-jq4q, MINI-fmxg-rh45-jw92, ROOT-APP-NPM-CVE-2026-102826.