CVE-2026-71254

NanoMODBUS v1.23.0 is affected by CVE-2026-71254 in the server-side handle_read_file_record() (FC 0x14). The code validates per-sub-request sizes but does not validate the cumulative response size across all sub-requests. Accumulator response_data_size is a uint8_t and may overflow (e.g., 35 sub-...