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fix: restrict .env file permissions to 0600

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Set file mode 0600 on ~/.hermes/.env after creation in the installer and
after every write via memory_setup._write_env_vars(). This ensures only
the file owner can read/write API keys and tokens, matching standard
practice for credential files (.netrc, .aws/credentials, .ssh/config).

Fixes #25477
This commit is contained in:
vanthinh6886 2026-05-14 07:59:31 -07:00 • committed by Teknium
parent f26098e22f
commit a952ca3ff6
2 changed files with 10 additions and 0 deletions
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6
hermes_cli/memory_setup.py
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@ -379,6 +379,12 @@ def _write_env_vars(env_path: Path, env_writes: dict) -> None:
new_lines.append(f"{key}={val}")
env_path.write_text("\n".join(new_lines) + "\n", encoding="utf-8")
# Restrict permissions — .env holds API keys and tokens.
try:
import stat
env_path.chmod(stat.S_IRUSR | stat.S_IWUSR) # 0600
except OSError:
pass # Windows or read-only FS
# ---------------------------------------------------------------------------