AnthropicGHSA-66m2-gx93-v996
Permission deny bypass through symlink
Low2.3CVE-2025-59829 · Published Oct 3, 2025
Claude Code failed to account for symlinks when checking permission deny rules. If a user explicitly denied Claude Code access to a file and Claude Code had access to a symlink pointing to that file, it was possible for Claude Code to access the file. 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/vinai for reporting this issue!
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| @anthropic-ai/claude-code npm | < v1.0.120 | v1.0.120 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-61
More Anthropic advisories
All Anthropic| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Nov 192025 | Command execution prior to Claude Code startup trust dialog | High7.7 | v1.0.39 |
| Oct 32025 | Command execution prior to Claude Code startup trust dialog | High8.7 | v1.0.111 |
| Sep 242025 | Claude Code Vulnerable to Arbitrary Code Execution via Plugin Autoloading with Specific Yarn Versions | High7.7 | v1.0.39 |
| Sep 92025 | Command Injection in Claude Code rg command allowed bypass of user approval prompt for command execution | High8.7 | 1.0.105 |
| Sep 92025 | Claude Code vulnerable to arbitrary code execution caused by maliciously configured git email | High8.7 | 1.0.105 |
| Sep 22025 | Claude Code Vulnerable to Arbitrary Code Execution Due to Insufficient Startup Warning | High8.7 | v1.0.87 |