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Q1What is this vulnerability? (Essence + Consequences)
π¨ **Essence**: Critical OS Command Injection in Anthropic's **Claude Code CLI** & **Agent SDK**. π₯ **Consequences**: Attackers can execute **arbitrary system commands** via shell meta-characters.β¦
π‘οΈ **Root Cause**: **CWE-78** (OS Command Injection). The flaw lies in the **authentication helper**. It executes commands with `shell=true` but **fails to validate inputs**.β¦
π₯ **Affected**: **Anthropic** products. Specifically **Claude Code CLI** (AI coding assistant) and **Claude Agent SDK** (developer toolkit). Any version utilizing the vulnerable authentication helper logic is at risk.
Q4What can hackers do? (Privileges/Data)
π **Attacker Capabilities**: **Full Control**. With **CVSS 9.8 (Critical)**, attackers gain **High Confidentiality, Integrity, and Availability** impact.β¦
π **Self-Check**: Scan for **Claude Code CLI** and **Agent SDK** installations. Check if authentication helpers are configured with `shell=true`.β¦
π§ **Workaround**: If no patch is available, **disable the authentication helper** if not strictly needed. **Strictly sanitize** all input passed to shell commands. Avoid using `shell=true` unless absolutely necessary.β¦
β‘ **Urgency**: **CRITICAL / IMMEDIATE ACTION**. CVSS 9.8 + No Auth Required = **High Priority**. Patch immediately or apply mitigations. This is a **nightmare CI/CD risk** allowing credential exfiltration. Do not ignore.