CVE-2026-102829 simple-git: `VISUAL` editor environment variable is omitted from unsafe editor detection
Attackers can execute arbitrary code via the VISUAL environment variable in simple-git if the application forwards attacker-controlled environment values.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-102829?
CVE-2026-102829 is a critical 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 2.0.1 of the argv-parser package, parseEnv omits VISUAL from GitEnvKeys, so prepareEnv drops the value before vulnerabilityCheck can classify it as allowUnsafeEditor. A consuming application that forwards attacker-influenced environment values can therefore allow Git to invoke an attacker-selected editor during operations such as commit amendment or interactive rebase when no higher-priority editor setting overrides VISUAL and Git's terminal prerequisites are met. The executable runs with the privileges of the Node.js process. This issue is fixed in argv-parser 2.0.1.
Which versions are affected by CVE-2026-102829?
2 open source packages ship an affected version, including @simple-git/argv-parser.
| Package | Affected | Fixed in |
|---|---|---|
@simple-git/argv-parser npm | All versions | 2.0.1 |
@simple-git/argv-parser npm | All versions | 2.0.1 |
How do I fix CVE-2026-102829?
Upgrade @simple-git/argv-parser to 2.0.1 or later.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-102829 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-102829 exists.
Sources
Also known as CLEANSTART-2026-ES51269, CLEANSTART-2026-IX68198, CLSA-2026-1792595414, ECHO-bb3c-f0fd-74d5, GHSA-v5rq-49vh-5v5c, MINI-5cqr-37cc-7rc6 and 2 more.