Vulnerability · Published Sep 29, 2026 · Assigned by GitHub_M
CVE-2026-102829simple-git: `VISUAL` editor environment variable is omitted from unsafe editor detection
Critical 9.2
In plain English
A critical-severity OS command injection in git-js from steveukx. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @simple-git/argv-parser | 2.0.1 | GHSA-v5rq-49vh-5v5c |
Affected products (as reported)
Weakness: CWE-78, CWE-184 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
- https://github.com/steveukx/git-js/security/advisories/GHSA-v5rq-49vh-5v5c x_refsource_CONFIRM
- https://github.com/steveukx/git-js/pull/1201 x_refsource_MISC
- https://github.com/steveukx/git-js/commit/68874c239f0c7a87f4a68c3d2c4a0d7c75bb27f4 x_refsource_MISC
- https://github.com/steveukx/git-js/releases/tag/@simple-git/argv-parser@2.0.1 x_refsource_MISC