CVE-2026-25724— Claude Code Has Permission Deny Bypass Through Symbolic Links
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I. Basic Information for CVE-2026-25724
Vulnerability Information
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Vulnerability Title
Claude Code Has Permission Deny Bypass Through Symbolic Links
Source: NVD (National Vulnerability Database)
Vulnerability Description
Claude Code is an agentic coding tool. Prior to version 2.1.7, Claude Code failed to strictly enforce deny rules configured in settings.json when accessing files through symbolic links. If a user explicitly denied Claude Code access to a file (such as /etc/passwd) and Claude Code had access to a symbolic link pointing to that file, it was possible for Claude Code to read the restricted file through the symlink without triggering deny rule enforcement. This issue has been patched in version 2.1.7.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-61
Source: NVD (National Vulnerability Database)
Vulnerability Title
Claude Code 授权问题漏洞
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 2.1.7之前版本存在授权问题漏洞，该漏洞源于通过符号链接访问文件时未能严格执行settings.json中配置的拒绝规则，可能导致读取受限制的文件。
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 | < 2.1.7 | - |
II. Public POCs for CVE-2026-25724
| # | 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-2026-25723 | Claude Code Vulnerable to Command Injection via Piped sed Command Bypasses File Write Rest | |
| CVE-2026-25725 | Claude Code Has Sandbox Escape via Persistent Configuration Injection in settings.json |
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-61
- CVE-2026-29203
cPanel 安全漏洞 - CVE-2026-42275
zrok: WebDAV drive backend follows symlinks outside DriveRoo - CVE-2026-31893
Tunnelblick arbitrary file read via symlink following in tun - CVE-2026-7832
IObit Advanced SystemCare Service ASC.exe symlink - CVE-2026-43570
OpenClaw 2026.3.22 < 2026.4.5 - Symlink Traversal in Remote
V. Comments for CVE-2026-25724
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