CVE-2026-40068— Claude Code arbitrary code execution via git worktree commondir trust dialog bypass
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I. Basic Information for CVE-2026-40068
Vulnerability Information
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Vulnerability Title
Claude Code arbitrary code execution via git worktree commondir trust dialog bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
In versions 2.1.63 through 2.1.83 of Claude Code, the folder trust determination logic used the git worktree commondir file without validating its contents. An attacker could craft a malicious repository with a commondir file pointing to a path the victim had previously trusted, causing Claude Code to bypass its trust confirmation dialog and immediately execute hooks defined in `.claude/settings.json`. Exploitation requires the victim to clone the malicious repository and run Claude Code within it, and the attacker must know or guess a path the victim had already trusted. This issue has been fixed in version 2.1.84.
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 输入验证错误漏洞
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 2.1.63版本至2.1.83版本存在输入验证错误漏洞，该漏洞源于文件夹信任确定逻辑未验证git worktree commondir文件内容，可能导致绕过信任确认对话框并立即执行钩子。
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 | >= 2.1.63, < 2.1.84 | - |
II. Public POCs for CVE-2026-40068
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: claude-code
- 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 - CVE-2026-25724
Claude Code Has Permission Deny Bypass Through Symbolic Link
Same vendor: anthropics
- 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 - CVE-2026-34450
Claude SDK for Python: Insecure Default File Permissions in
Same weakness: CWE-20
V. Comments for CVE-2026-40068
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