Most common Solidity Issues that you need to know about

Although solidity is a relatively recent addition to the programming world, its widespread use will give you an idea of how popular it is. Due to the craze of overusing this language to create smart contracts, many people overlook the fundamental problems of solidity. Many developers are still ignorant of these solidity vulnerabilities and continue to use them in their present form, allowing attackers to take advantage of them. blockchain certification to get the best out of this wonderful technology.

Unchecked External Call

It's a major solidity issue. In reality, external calling in Solidity may be done in a variety of ways. Transferring Ether to any external account is the most often used feature. It may, however, be done in a variety of ways. For example, call() and send() may be used to do this. The call() method is mostly used by the developer for various external calling apps.

Reentrancy

This is another important problem that many blockchain developer don't recognize. In reality, Ethereum intelligent contracts have the unique property of being able to call up or even utilise scripts from other external contracts. Contracts often utilise Ether and transfer it to other contracts.

Gas limit and costly loops

Another advantage is the high cost of loop issues. As you may be aware, Ethereum blockchain computing power is not available for free. You must spend Ether to get gas, which allows you to carry out your transaction. As a result, limiting the number of computation steps saves you time and money.

Clearing Mappings

Because of the limitations of programming languages, clearing mappings is a significant issue. The Solidity type mapping, in effect, creates a data structure with a key value that can only be saved on blockchain systems. As a result, not all keys are assigned a value other than zero.

Accuracy of arithmetic

Another issue with Solidity is floating points. Solidity does not yet support floating or fixed numbers. As a result, to represent these floating points in Solidity, you must use an integer type. If this is not correctly done, many developers may make errors or create loopholes. As a result, developers must build their own fixed-point data type using the normal integer data type.

Unexpected Ether

There are several Solidity issues, and one of them is an unanticipated Ether. When it transfers Ether into an address, it usually has to execute the fallback function or other contract-related tasks. There are, however, certain exceptions to these principles. In this case, the Ether may stay in the contract even if the code isn't executed. Program-based contracts are vulnerable because they may push Ether into another contract for each and every ether transaction.

Wrapping up

You may begin your learning process now that you are aware of the major flaws. Because Solidity is a relatively new programming language, it has its own set of issues. This kind of gap, on the other hand, should be closed or avoided since it may lead to contract and platform vulnerabilities. The simplest way to do so is to understand how Ethereum and everything else works. We recommend beginning our Ethereum development course to learn more about this and potential solutions.