fix: #10208, don't use leading slash in directory names

change to use decodeURIComponent in utils.params

public/src/utils.js

@@ -645,10 +645,10 @@
 
 			params.forEach(function (param) {
 				const val = param.split('=');
-				let key = decodeURI(val[0]);
+				let key = decodeURIComponent(val[0]);
 				const value = (
 					options.disableToType ||
-					options.skipToType[key] ? decodeURI(val[1]) : utils.toType(decodeURI(val[1]))
+					options.skipToType[key] ? decodeURIComponent(val[1]) : utils.toType(decodeURIComponent(val[1]))
 				);
 
 				if (key) {

src/controllers/admin/uploads.js

@@ -87,15 +87,16 @@ async function filesToData(currentDir, files) {
 }
 
 async function getFileData(currentDir, file) {
-	const stat = await fs.promises.stat(path.join(currentDir, file));
+	const pathToFile = path.join(currentDir, file);
+	const stat = await fs.promises.stat(pathToFile);
 	let filesInDir = [];
 	if (stat.isDirectory()) {
-		filesInDir = await fs.promises.readdir(path.join(currentDir, file));
+		filesInDir = await fs.promises.readdir(pathToFile);
 	}
 	const url = `${nconf.get('upload_url') + currentDir.replace(nconf.get('upload_path'), '')}/${file}`;
 	return {
 		name: file,
-		path: path.join(currentDir, file).replace(nconf.get('upload_path'), ''),
+		path: pathToFile.replace(path.join(nconf.get('upload_path'), '/'), ''),
 		url: url,
 		fileCount: Math.max(0, filesInDir.length - 1), // ignore .gitignore
 		size: stat.size,