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anthropics/claude-code · Security

Claude Code vulnerable to arbitrary code execution caused by maliciously configured git email

GHSA ID
GHSA-j4h9-wv2m-wrf7
CVE ID
CVE-2025-59041
Severity
high
Published
Updated
CVSS v4
8.5 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Description

At startup, Claude Code constructed a shell command that interpolated the value of git config user.email from the current workspace. If an attacker controlled the repository’s Git config (e.g., via a malicious .git/config) and set user.email to a crafted payload, the unescaped interpolation could trigger arbitrary command execution before the user accepted the workspace-trust dialog. The issue affects versions prior to 1.0.105. The fix in 1.0.105 avoids executing commands built from untrusted configuration and properly validates/escapes inputs.

  • Patches: Update to @anthropic-ai/claude-code 1.0.105 or later.
  • Workarounds: Open only trusted workspaces and inspect repository .git/config before launch; avoid inheriting untrusted Git configuration values.

Thank you to the NVIDIA AI Red Team for reporting this issue!

CWEs

  • CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
  • CWE-94 · Improper Control of Generation of Code ('Code Injection')

References