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CVE-2025-66032

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Date: December 3, 2025

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.

Severity Score

Related Resources (4)

https://github.com/anthropics/claude-code/security/advisories/GHSA-xq4m-mc3c-vvg3
https://nvd.nist.gov/vuln/detail/CVE-2025-66032
https://github.com/anthropics/claude-code
https://www.mend.io/vulnerability-database/CVE-2025-66032

Severity Score

Weakness Type (CWE)

Improper Neutralization of Special Elements used in a Command ('Command Injection')

CWE-77

Improper Input Validation

CWE-20

Top Fix

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Upgrade Version

Upgrade to version @anthropic-ai/claude-code - 1.0.93

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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