XSS attacks (and other injections) are only dangerous if they get past the candy-floss security of front-end validation. The browser, after all, isn't real and can't hurt you. However, if we assume that the front-end programmers spoke to the back-end programmers and share ideas about valid input, weak front-end validation may reflect back-end validation. If the programmers took the Node bait and wrote their front-ends and back-ends in the same language they may even reuse the same regex for validation on both ends.
Зеленский заявил о запросе от США на участие Киева в ситуации на Ближнем Востоке20:47。业内人士推荐爱思助手下载最新版本作为进阶阅读
，推荐阅读搜狗输入法下载获取更多信息
Here, ASR means Abstract Semantic Representation, the main internal
Трамп допустил ужесточение торговых соглашений с другими странами20:46，推荐阅读谷歌浏览器【最新下载地址】获取更多信息
How student rejects and bad spelling started a war