aric/nrel-spa-dart
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Security

Scope

nrel_spa is a pure-computation library with no network access, no file I/O, and no external dependencies. The attack surface is limited to the mathematical functions themselves.

The main concern is input validation: getSpa and calcSpa throw ArgumentError when inputs fall outside the NREL SPA valid ranges (e.g., latitude outside -90..90, year outside -2000..6000). If you pass untrusted input to these functions, catch the error.

Reporting a Vulnerability

If you discover a security issue (for example, a case where malformed input causes unexpected behavior beyond the documented ArgumentError), please report it privately before filing a public issue.

Contact: alisalaah@gmail.com

Include:

  1. A description of the vulnerability
  2. Steps to reproduce it
  3. The version of nrel_spa where you observed the issue
  4. Any suggested fix if you have one

You can expect an acknowledgment within 48 hours and a resolution or status update within 7 days.

Known Limitations

  • The algorithm is valid for years -2000 to 6000 and is accurate to within ±0.0003° for solar zenith angle. Inputs outside this range produce ArgumentError.
  • This is a Dart port of the NREL SPA algorithm (Reda & Andreas, 2004, NREL/TP-560-34302). Numerical results match the reference implementation to the precision defined in that report.