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CVE-2026-102829: simple-git: `VISUAL` editor environment variable is omitted from unsafe editor detection

• Severity: critical (CVSS 9.2 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-29 · updated 2026-09-30
• Weakness: CWE-78

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 products

• simple-git: before 2.0.1

References

• https://github.com/steveukx/git-js/commit/68874c239f0c7a87f4a68c3d2c4a0d7c75bb27f4
• https://github.com/steveukx/git-js/pull/1201
• https://github.com/steveukx/git-js/releases/tag/@simple-git/argv-parser@2.0.1
• https://github.com/steveukx/git-js/security/advisories/GHSA-v5rq-49vh-5v5c

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