Fixed URL parsing so it's now properly giving 404 for URLs like http://example.com//////site/about

framework/CHANGELOG.md

@@ -28,6 +28,7 @@ Yii Framework 2 Change Log
 - Bug: Json::encode() did not handle objects that implement JsonSerializable interface correctly (cebe)
 - Bug: Fixed issue with tabular input on ActiveField::radio() and ActiveField::checkbox() (jom)
 - Bug: Fixed the issue that query cache returns the same data for the same SQL but different query methods (qiangxue)
+- Bug: Fixed URL parsing so it's now properly giving 404 for URLs like `http://example.com//////site/about` (samdark)
 - Enh #46: Added Image extension based on [Imagine library](http://imagine.readthedocs.org) (tonydspaniard)
 - Enh #364: Improve Inflector::slug with `intl` transliteration. Improved transliteration char map. (tonydspaniard)
 - Enh #797: Added support for validating multiple columns by `UniqueValidator` and `ExistValidator` (qiangxue)

framework/yii/web/Request.php

@@ -584,7 +584,11 @@ class Request extends \yii\base\Request
 			throw new InvalidConfigException('Unable to determine the path info of the current request.');
 		}
 
-		return ltrim($pathInfo, '/');
+		if ($pathInfo[0] === '/') {
+			$pathInfo = substr($pathInfo, 1);
+		}
+
+		return $pathInfo;
 	}
 
 	/**