CVE-2025-59536

Published Oct 3, 2025

Last updated 7 months ago

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-59536 identifies a code injection vulnerability present in versions of Anthropic's Claude Code prior to 1.0.111. Claude Code is described as an agentic coding tool. The vulnerability stems from a flaw in the implementation of the startup trust dialog, which could allow the tool to execute code embedded within a project before a user explicitly accepts the trust dialog. Exploitation of this vulnerability typically requires a user to initiate Claude Code within an untrusted directory. Malicious project configurations, such as those leveraging "Hooks" or Model Context Protocol (MCP) servers, could be used to execute arbitrary shell commands or exfiltrate API keys when a developer opens untrusted repositories. The issue was addressed in version 1.0.111 of Claude Code.

Description: Claude Code is an agentic coding tool. Versions before 1.0.111 were vulnerable to Code Injection 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. This issue is fixed in version 1.0.111.
Source: security-advisories@github.com
NVD status: Analyzed
Products: claude_code

Risk scores

CVSS 4.0

Type: Secondary
Base score: 8.7
Impact score: -
Exploitability score: -
Vector string: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity: HIGH

CVSS 3.1

Type: Primary
Base score: 8.8
Impact score: 5.9
Exploitability score: 2.8
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: HIGH

Weaknesses

security-advisories@github.com: CWE-94

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*",
            "matchCriteriaId": "F3228CCD-772D-459F-ACFD-0230FD8AB721",
            "versionEndExcluding": "1.0.111",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.