Do I need to take frontend security seriously?

[qwertytrewq]

Do I need to take frontend security seriously? Dependabot reports me security errors in frontend.

But because it’s frontend, not backend that is supposed to keep system secure, do I need to take these warnings seriously or can just skip them?

Could you give an example how a frontend bug leads to security breach?

[Severin]

Here’s an example: Hacker Infects Node.js Package to Steal from Bitcoin Wallets | Trend Micro (HK)