CVE-2025-66032: anthropic claude_code Command Injection

Vulnerability summary

CVE-2025-66032 is a critical (CVSS 9.8) Command Injection vulnerability in anthropic claude_code. EPSS estimates a 0.69% chance of exploitation in the next 30 days, higher than 52.1% of scored vulnerabilities.

Timeline

1. 03-12-2025
   PublishedVulnerability first disclosed.
2. 03-12-2025
   Last modifiedVulnerability information updated.

Description

Claude Code is an agentic coding tool. Prior to 1.0.93, Due to errors in parsing shell commands related to $IFS and short CLI flags, it was possible to bypass the Claude Code read-only validation and trigger arbitrary code execution. Reliably exploiting this requires the ability to add untrusted content into a Claude Code context window. This vulnerability is fixed in 1.0.93.

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.