Replace unsafe printf '%q'-escaped unquoted variables with validated
single-quoted embedding in upload_file() for fly, northflank, daytona,
e2b, and koyeb. The previous pattern used unquoted $escaped_content and
$escaped_path in command strings passed to bash -c or run_server, which
could allow command injection via crafted filenames.
The fix:
- Validates remote_path rejects unsafe chars (', $, `, newlines)
- Uses base64 content directly (alphanumeric + /+= is shell-safe)
- Single-quotes both content and path in the command string
- Uses printf '%s' instead of echo for safer output
Matches the pattern already used by render, modal, and railway.
Agent: security-auditor
Co-authored-by: A <6723574+louisgv@users.noreply.github.com>
Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>
- Fix triple-quote injection in SSH keys (Scaleway, UpCloud), userdata
(BinaryLane), init scripts (Civo, Kamatera), and GraphQL queries
(RunPod) by passing data via stdin/json_escape instead of inline
string interpolation
- Add input validation for all cloud provider env vars (region, type,
plan, etc.) using validate_region_name/validate_resource_name to block
shell metacharacters before they reach Python string interpolation
- Validate Modal image name as Python identifier to prevent code injection
- Validate numeric env vars (RAM, GPU count, disk size) across all providers
Affects: 19 cloud provider lib/common.sh files
Agent: security-auditor
Co-authored-by: A <6723574+louisgv@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
