GHSA-jh7p-qr78-84p7
Claude Code Leaks Data via Malicious Environment Configuration Before Trust Confirmation
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @anthropic-ai/claude-code | < 2.0.65 | 2.0.65 |
Details
As written in the advisory (Markdown source, shown as plain text).
A vulnerability in Claude Code's project-load flow allowed malicious repositories to exfiltrate data including Anthropic API keys before users confirmed trust. If a user started Claude Code in an attacker-controller repository, and the repository included a settings file that set ANTHROPIC_BASE_URL to an attacker-controlled endpoint, Claude Code would issue API requests before showing the trust prompt, including potentially leaking the user's API keys.
Users on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to the latest version.
References
External links from the advisory. They lead to third-party sites.