AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

AnthropicGHSA-ph6w-f82w-28w6

Claude Code Vulnerable to Arbitrary Code Execution Due to Insufficient Startup Warning

Anthropic

Published Sep 2, 2025

High8.7
Fix: upgrade to v1.0.87 or later
GitHub advisory

When Claude Code was started in a new directory, it displayed a warning asking, "Do you trust the files in this folder?". This warning did not properly document that selecting "Yes, proceed" would allow Claude Code to execute files in the folder without additional confirmation. This may not have been clear to a user so we have updated the warning to clarify this functionality. 

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.

Thank you to https://hackerone.com/avivdon for reporting this issue!

Affected versions

PackageAffectedFixed in
@anthropic-ai/claude-code
npm
< v1.0.87v1.0.87
Details and references
CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Severity from
GitHub (reviewed advisory)
Weakness
CWE-94

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