CVE-2025-59536: @anthropic ai/claude code Claude Code Can Execute Commands Vulnerability

HIGH
Advisory Identifier: GHSA-4fgq-fpq9-mr3g
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CWE-94
Published
Advisory Summary

CVE-2025-59536 is a HIGH claude code can execute commands vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting @anthropic ai/claude code libraries in the npm ecosystem. The issue involves claude code can execute commands prior to the startup trust dialog. Remediation is available by upgrading affected packages to version 1.0.111.

CVE-2025-59536 at a Glance

CVE Identifier CVE-2025-59536
GHSA Identifier GHSA-4fgq-fpq9-mr3g
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product @anthropic ai/claude code
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2025-59536

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: 1.0.111 
npm install @anthropic-ai/claude-code@1.0.111
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-2025-59536, 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 1.0.111), 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-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. 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

Due to a bug in the startup trust dialog implementation, Claude Code could be tricked to execute code contained in a project before the user accepted the startup trust dialog. Exploiting this requires a user to start Claude Code in an untrusted directory. Users on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version. Thank you to https://hackerone.com/avivdon for reporting this issue!

CVE-2025-59536 Affected @anthropic ai/claude code Versions

1 component(s)
Fixed Versions:
1.0.111
Product / Package Ecosystem Affected Versions Fixed Version
@anthropic-ai/claude-code
npm/@anthropic-ai/claude-code
npm
< 1.0.111
1.0.111

References

GitHub Advisory / Wiki ADVISORY
https://github.com/anthropics/claude-code/security/advisories/GHSA-4fgq-fpq9-mr3g
NVD — CVE-2025-59536 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-59536
@anthropic ai/claude code Source Repository REPOSITORY
https://github.com/anthropics/claude-code

Frequently Asked Questions

What is CVE-2025-59536?
CVE-2025-59536 is a security vulnerability in @anthropic ai/claude code involving Claude Code can execute commands prior to the startup trust dialog under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which @anthropic ai/claude code versions are affected?
Affected versions include releases prior to 1.0.111 across affected packages: @anthropic-ai/claude-code.
What version fixes CVE-2025-59536?
Upgrading to 1.0.111 (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 1.0.111. Upgrade your dependency to 1.0.111 or later.
What CWE is associated with CVE-2025-59536?
CVE-2025-59536 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check npm dependencies for CVE-2025-59536?
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-4fgq-fpq9-mr3g",
  "modified" : "2025-10-03T14:16:34Z",
  "published" : "2025-10-03T14:16:34Z",
  "aliases" : [ "CVE-2025-59536" ],
  "summary" : "Claude Code can execute commands prior to the startup trust dialog ",
  "details" : "Due to a bug in the startup trust dialog implementation, Claude Code could be tricked to execute code contained in a project before the user accepted the startup trust dialog. Exploiting this requires a user to start Claude Code in an untrusted directory. \n\nUsers on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version.\n\nThank you to https://hackerone.com/avivdon for reporting this issue!",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/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" : "1.0.111"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/anthropics/claude-code/security/advisories/GHSA-4fgq-fpq9-mr3g"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-59536"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/anthropics/claude-code"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-10-03T14:16:34Z",
    "nvd_published_at" : "2025-10-03T07:15:44Z"
  }
}