Security audit found two gaps. Sabre only quotes ICS
parameter values containing space, newline, quote, colon,
semicolon, caret, comma or plus, so a bare carriage
return in a contact name would be written into the
serialized event unquoted and break the line structure;
names with control characters are now dropped. The raw
attendee input and the search query had no length
bound, a huge POST field was fully split, iterated and
echoed back on re-render, a cheap CPU sink; both are
now capped, the query at the longest possible email
fragment.