CVE-2025-59041: @anthropic ai/claude code Claude Code Vulnerable To Arbitrary Vulnerability

HIGH
Advisory Identifier: GHSA-j4h9-wv2m-wrf7
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CWE-78 CWE-94
Published
Advisory Summary

CVE-2025-59041 is a HIGH claude code vulnerable to arbitrary vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting @anthropic ai/claude code libraries in the npm ecosystem. The issue involves claude code vulnerable to arbitrary code execution caused by maliciously configured git email. Remediation is available by upgrading affected packages to version 1.0.105.

CVE-2025-59041 at a Glance

CVE Identifier CVE-2025-59041
GHSA Identifier GHSA-j4h9-wv2m-wrf7
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product @anthropic ai/claude code
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2025-59041

To remediate this vulnerability, upgrade all affected @anthropic ai/claude code dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

@anthropic-ai/claude-code fixed: 1.0.105 
npm install @anthropic-ai/claude-code@1.0.105
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls @anthropic-ai/claude-code

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2025-59041, inspect your project dependencies using npm:

npm ls @anthropic-ai/claude-code

Analyze the terminal output to locate any version of @anthropic ai/claude code in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.105), your application is affected.

Note: The npm ls @anthropic-ai/claude-code command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In @anthropic ai/claude code, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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!

CVE-2025-59041 Affected @anthropic ai/claude code Versions

1 component(s)
Fixed Versions:
1.0.105
Product / Package Ecosystem Affected Versions Fixed Version
@anthropic-ai/claude-code
npm/@anthropic-ai/claude-code
npm
< 1.0.105
1.0.105

References

GitHub Advisory / Wiki ADVISORY
https://github.com/anthropics/claude-code/security/advisories/GHSA-j4h9-wv2m-wrf7
NVD — CVE-2025-59041 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-59041
@anthropic ai/claude code Source Repository REPOSITORY
https://github.com/anthropics/claude-code
www.npmjs.com/package/@anthropic-... WEB
https://www.npmjs.com/package/@anthropic-ai/claude-code/v/1.0.105

Frequently Asked Questions

What is CVE-2025-59041?
CVE-2025-59041 is a security vulnerability in @anthropic ai/claude code involving Claude Code vulnerable to arbitrary code execution caused by maliciously configured git email under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which @anthropic ai/claude code versions are affected?
Affected versions include releases prior to 1.0.105 across affected packages: @anthropic-ai/claude-code.
What version fixes CVE-2025-59041?
Upgrading to 1.0.105 (or the latest patched release for your respective branch) resolves the vulnerability.
Is @anthropic-ai/claude-code affected?
Yes, @anthropic-ai/claude-code is affected in releases prior to 1.0.105. Upgrade your dependency to 1.0.105 or later.
What CWE is associated with CVE-2025-59041?
CVE-2025-59041 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check npm dependencies for CVE-2025-59041?
Run the dependency tree command: 'npm ls @anthropic-ai/claude-code'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-j4h9-wv2m-wrf7",
  "modified" : "2025-09-25T23:42:37Z",
  "published" : "2025-09-10T20:29:04Z",
  "aliases" : [ "CVE-2025-59041" ],
  "summary" : "Claude Code vulnerable to arbitrary code execution caused by maliciously configured git email ",
  "details" : "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.\n\n*   **Patches:** Update to `@anthropic-ai/claude-code` `1.0.105` or later.\n*   **Workarounds:** Open only trusted workspaces and inspect repository `.git/config` before launch; avoid inheriting untrusted Git configuration values.\n\n> Thank you to the NVIDIA AI Red Team for reporting this issue!",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@anthropic-ai/claude-code"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.105"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/anthropics/claude-code/security/advisories/GHSA-j4h9-wv2m-wrf7"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-59041"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/anthropics/claude-code"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/package/@anthropic-ai/claude-code/v/1.0.105"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78", "CWE-94" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-09-10T20:29:04Z",
    "nvd_published_at" : "2025-09-10T16:15:41Z"
  }
}