From 9bb6878fbc6d5ca8094cb32eb950c035493b443d Mon Sep 17 00:00:00 2001
From: Matthias Schmidt <gravatronics@live.com>
Date: Sat, 19 May 2018 09:42:55 +0200
Subject: [PATCH] Add missing value validation in `TSelectionFormField`

See #2509
---
 .../form/builder/field/TSelectionFormField.class.php  | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/wcfsetup/install/files/lib/system/form/builder/field/TSelectionFormField.class.php b/wcfsetup/install/files/lib/system/form/builder/field/TSelectionFormField.class.php
index 3487cdbbb8..24d13501cd 100644
--- a/wcfsetup/install/files/lib/system/form/builder/field/TSelectionFormField.class.php
+++ b/wcfsetup/install/files/lib/system/form/builder/field/TSelectionFormField.class.php
@@ -149,4 +149,15 @@ trait TSelectionFormField {
 		
 		parent::validate();
 	}
+	
+	/**
+	 * @inheritDoc
+	 */
+	public function value($value): IFormField {
+		if (!in_array($value, $this->possibleValues)) {
+			throw new \InvalidArgumentException("Unknown value '{$value}'");
+		}
+		
+		return parent::value($value);
+	}
 }
-- 
2.20.1