Potential fix for code scanning alert no. 475: Inefficient regular expression

LCSOGthb · github-advanced-security[bot] · web-flow · commit dad7125222b8 · 2025-04-23T23:08:30.000+08:00
Co-authored-by: Copilot Autofix powered by AI &lt;62310815+github-advanced-security[bot]@users.noreply.github.com&gt;
diff --git a/scripts.js b/scripts.js
@@ -95,7 +95,7 @@ function validateIP (ip) {
 
 // Validate URL
 function validateURL (url) {
-  const regex = /^(https?:\/\/)?[A-Za-z0-9_.-]+(\.[A-Za-z0-9_.-]+)+[/#?]?.*$/
+  const regex = /^(https?:\/\/)?[A-Za-z0-9](?:[A-Za-z0-9_.-]*[A-Za-z0-9])?(\.[A-Za-z0-9](?:[A-Za-z0-9_.-]*[A-Za-z0-9])?)+[/#?]?.*$/
   return regex.test(url)
 }
 

Original file line number	Diff line number	Diff line change
`@@ -95,7 +95,7 @@ function validateIP (ip) {`
`95`	`95`
`96`	`96`	`// Validate URL`
`97`	`97`	`function validateURL (url) {`
`98`		`- const regex = /^(https?:\/\/)?[A-Za-z0-9_.-]+(\.[A-Za-z0-9_.-]+)+[/#?]?.*$/`
	`98`	`+ const regex = /^(https?:\/\/)?[A-Za-z0-9](?:[A-Za-z0-9_.-][A-Za-z0-9])?(\.[A-Za-z0-9](?:[A-Za-z0-9_.-][A-Za-z0-9])?)+[/#?]?.*$/`
`99`	`99`	`return regex.test(url)`
`100`	`100`	`}`
`101`	`101`