CVE-2025-66032

Claude Code Command Validation Bypass Allows Arbitrary Code Execution

Published: Dec 3, 2025Updated: Dec 5, 2025 Sources: CVE List NVD GHSACWE-77

9.8CRITICAL

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-77

Affected Products

anthropics

commercial·USaka claude-code, anthropic-sdk-python, anthropic-sdk-typescript

claude-codeSaaS

AI / ML / llm-serving-inference

anthropic

commercial·USaka claude

claude codeSaaS

AI / ML / llm-serving-inference

npm

package-ecosystem

@anthropic-ai/claude-code

OSS Libraries

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Execution

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References

https://github.com/anthropics/claude-code/security/advisories/GHSA-xq4m-mc3c-vvg3

github.com

https://nvd.nist.gov/vuln/detail/CVE-2025-66032

nvd.nist.gov

https://github.com/anthropics/claude-code

github.com

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