CVE-2025-54795: anthropic claude_code OS Command Injection

Vulnerability summary

CVE-2025-54795 is a critical (CVSS 9.8) OS Command Injection vulnerability in anthropic claude_code. EPSS estimates a 1.00% chance of exploitation in the next 30 days, higher than 62.5% of scored vulnerabilities.

Timeline

1. 05-08-2025
   PublishedVulnerability first disclosed.
2. 05-08-2025
   Last modifiedVulnerability information updated.

Description

Claude Code is an agentic coding tool. In versions below 1.0.20, an error in command parsing makes it possible to bypass the Claude Code confirmation prompt to trigger execution of an untrusted command. Reliably exploiting this requires the ability to add untrusted content into a Claude Code context window. This is fixed in version 1.0.20.

• CWE-78Improper 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.