route in main.c in Pico HTTP Server in C through f3b69a6 has an sprintf stack-based buffer overflow via a long URI, leading to remote code execution.
https://github.com/foxweb/pico/issues/31
https://github.com/foxweb/pico/commit/e2d172f
https://github.com/foxweb/pico/commit/7a5e4e242121c839cb77f5b9003e735a852f4e58