CVE-2026-25723— Claude Code Vulnerable to Command Injection via Piped sed Command Bypasses File Write Restrictions
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I. Basic Information for CVE-2026-25723
Vulnerability Information
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Vulnerability Title
Claude Code Vulnerable to Command Injection via Piped sed Command Bypasses File Write Restrictions
Source: NVD (National Vulnerability Database)
Vulnerability Description
Claude Code is an agentic coding tool. Prior to version 2.0.55, Claude Code failed to properly validate commands using piped sed operations with the echo command, allowing attackers to bypass file write restrictions. This vulnerability enabled writing to sensitive directories like the .claude folder and paths outside the project scope. Exploiting this required the ability to execute commands through Claude Code with the "accept edits" feature enabled. This issue has been patched in version 2.0.55.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
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开源的一个终端原生AI编程工具。 Claude Code 2.0.55之前版本存在操作系统命令注入漏洞，该漏洞源于未能正确验证使用带echo命令的管道sed操作的命令，可能导致绕过文件写入限制。
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 | < 2.0.55 | - |
II. Public POCs for CVE-2026-25723
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · anthropics · 2026-02-06 · 4 CVEs total
| CVE-2026-25722 | Claude Code Vulnerable to Command Injection via Directory Change Bypasses Write Protection | |
| CVE-2026-25725 | Claude Code Has Sandbox Escape via Persistent Configuration Injection in settings.json | |
| CVE-2026-25724 | Claude Code Has Permission Deny Bypass Through Symbolic Links |
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-20
V. Comments for CVE-2026-25723
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