GitHub Advisoryadvisory · npm

GHSA-j4h9-wv2m-wrf7 Claude Code vulnerable to arbitrary code execution caused by maliciously configured git email

HIGH Published 2025-09-10 Modified 2025-09-25 Official page ↗
Aliases
CVE-2025-59041
Ecosystem
npm
Packages
@anthropic-ai/claude-code
Severity
High
CVSS vector
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
Weaknesses
CWE-78, CWE-94
Reviewed
2025-09-10

Affected packages

• npm @anthropic-ai/claude-code: < 1.0.105 → fixed in 1.0.105

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!

Related

Alias · CVE (1)

Weakness · CWE (2)

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command weakness
  • CWE-94 Improper Control of Generation of Code weakness

References