CVE-2025-55284— Claude Code's Permissive Default Allowlist Enables Unauthorized File Read and Network Exfiltration in Claude Code
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I. Basic Information for CVE-2025-55284
Vulnerability Information
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Vulnerability Title
Claude Code's Permissive Default Allowlist Enables Unauthorized File Read and Network Exfiltration in Claude Code
Source: NVD (National Vulnerability Database)
Vulnerability Description
Claude Code is an agentic coding tool. Prior to version 1.0.4, it's possible to bypass the Claude Code confirmation prompts to read a file and then send file contents over the network without user confirmation due to an overly broad allowlist of safe commands. Reliably exploiting this requires the ability to add untrusted content into a Claude Code context window. Users on standard Claude Code auto-update received this fix automatically after release. Current users of Claude Code are unaffected, as versions prior to 1.0.24 are deprecated and have been forced to update.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Claude Code 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Claude Code是Anthropic开源的一个代理编码工具。 Claude Code 1.0.4之前版本存在操作系统命令注入漏洞，该漏洞源于安全命令允许列表过于宽泛，可能导致未经确认的文件读取和网络传输。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| anthropics | claude-code | < 1.0.4 | - |
II. Public POCs for CVE-2025-55284
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|---|
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IV. Related Vulnerabilities
Same product: claude-code
- CVE-2026-40068
Claude Code arbitrary code execution via git worktree common - CVE-2026-39861
Claude Code: Sandbox Escape via Symlink Following Allows Arb - CVE-2026-35603
Claude Code: Insecure System-Wide Configuration Loading Enab - CVE-2026-33068
Claude Code has a Workspace Trust Dialog Bypass via Repo-Con - CVE-2026-25725
Claude Code Has Sandbox Escape via Persistent Configuration
Same vendor: anthropics
- CVE-2026-40068
Claude Code arbitrary code execution via git worktree common - CVE-2026-41686
Claude SDK for TypeScript has Insecure Default File Permissi - CVE-2026-39861
Claude Code: Sandbox Escape via Symlink Following Allows Arb - CVE-2026-35603
Claude Code: Insecure System-Wide Configuration Loading Enab - CVE-2026-34451
Claude SDK for TypeScript: Memory Tool Path Validation Allow
Same weakness: CWE-78
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