CVE-2026-27879: cap the resampled series length in
Series.Resample() at 1,000,000 points; the length was derived
straight from the caller-supplied time range and interval and then
allocated, so a crafted resample query could exhaust memory
CVE-2026-28375: bound the testdata data-source result sizes that
were taken unchecked from client-controlled maxDataPoints and line
counts - log lines, randomWalkTable, the simulation engine and the
USA scenario are each clamped to 10000 points