CVE-2025-59536 Claude Code's startup trust dialog could lead to Command Execution attack
Attackers can execute arbitrary code by tricking users into starting Claude Code in a malicious directory before accepting the trust dialog.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-59536?
CVE-2025-59536 is a high-severity code injection vulnerability in anthropics claude-code, published on 3 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Claude Code is an agentic coding tool. Versions before 1.0.111 were vulnerable to Code Injection due to a bug in the startup trust dialog implementation. Claude Code could be tricked to execute code contained in a project before the user accepted the startup trust dialog. Exploiting this requires a user to start Claude Code in an untrusted directory. Users on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version. This issue is fixed in version 1.0.111.
Weakness: CWE-94
Which versions are affected by CVE-2025-59536?
2 open source packages ship an affected version, including @anthropic-ai/claude-code. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
@anthropic-ai/claude-code npm | All versions | 1.0.111 |
@anthropic-ai/claude-code npm | All versions | 1.0.111 |
Products include Anthropic Claude Code.
How do I fix CVE-2025-59536?
Upgrade @anthropic-ai/claude-code to 1.0.111 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2025-59536 being exploited?
There is no known exploitation of CVE-2025-59536 in the wild and no public exploit code.
Public exploit code: 6 proofs of concept on GitHub.
Other vulnerabilities in anthropics claude-code
- CVE-2025-66032 Claude Code Command Validation Bypass Allows Arbitrary Code Execution
- CVE-2025-64755 @anthropic-ai/claude-code has Sed Command Validation Bypass that Allows Arbitrary File Writes
- CVE-2025-58764 Claude Code rg command had Command Injection that allowed bypass of user approval prompt for command execution
- CVE-2025-59041 Claude Code vulnerable to arbitrary code execution caused by maliciously configured git email
- CVE-2025-54795 Claude Code echo command allowed bypass of user approval prompt for command execution
Sources
Also known as GHSA-4fgq-fpq9-mr3g.