AnthropicGHSA-5hhx-v7f6-x7gv
Command execution prior to Claude Code startup trust dialog
High7.7CVE-2025-65099 · Published Nov 19, 2025 · updated Dec 22, 2025
When using Claude Code with Yarn installed, Yarn config files can trigger code execution when running yarn --version. This could lead to a bypass of the directory trust dialog in Claude Code, as plugins and yarnPath could be executed prior to the user accepting the risks of working 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. Thank you to Benjamin Faller, Redguard AG and Michael Hess for reporting this issue!
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| @anthropic-ai/claude-code npm | < v1.0.39 | v1.0.39 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-94
More Anthropic advisories
All Anthropic| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Dec 42025 | Network Sandboxing Escape | Low1.8 | 0.0.16 |
| Dec 32025 | Command Validation Bypass Allows Arbitrary Code Execution | High8.7 | v1.0.93 |
| Nov 202025 | Sed Command Validation Bypass Allows Arbitrary File Writes | High8.7 | v2.0.31 |
| Oct 32025 | Command execution prior to Claude Code startup trust dialog | High8.7 | v1.0.111 |
| Oct 32025 | Permission deny bypass through symlink | Low2.3 | v1.0.120 |
| Sep 242025 | Claude Code Vulnerable to Arbitrary Code Execution via Plugin Autoloading with Specific Yarn Versions | High7.7 | v1.0.39 |