OSV-2025-7 Heap-buffer-overflow in oatpp::json::Utils::escapeUtf8Char

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=387626404 Crash type: Heap-buffer-overflow WRITE 1 Crash state: oatpp::json::Utils::escapeUtf8Char oatpp::json::Utils::escapeString oatpp::json::Serializer::serializeString...