anthropics/claude-code · Security
Claude Code permission deny bypass through symlink
- GHSA ID
- GHSA-66m2-gx93-v996
- CVE ID
- CVE-2025-59829
- Severity
- low
- Published
- Updated
- CVSS v4
- 2.3 · 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
Description
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!
CWEs
- CWE-61 · UNIX Symbolic Link (Symlink) Following