diff --git a/core/Command/Config/System/CastHelper.php b/core/Command/Config/System/CastHelper.php
new file mode 100644
index 00000000000..f2b838bdf9b
--- /dev/null
+++ b/core/Command/Config/System/CastHelper.php
@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OC\Core\Command\Config\System;
+
+class CastHelper {
+	/**
+	 * @return array{value: mixed, readable-value: string}
+	 */
+	public function castValue(?string $value, string $type): array {
+		switch ($type) {
+			case 'integer':
+			case 'int':
+				if (!is_numeric($value)) {
+					throw new \InvalidArgumentException('Non-numeric value specified');
+				}
+				return [
+					'value' => (int)$value,
+					'readable-value' => 'integer ' . (int)$value,
+				];
+
+			case 'double':
+			case 'float':
+				if (!is_numeric($value)) {
+					throw new \InvalidArgumentException('Non-numeric value specified');
+				}
+				return [
+					'value' => (float)$value,
+					'readable-value' => 'double ' . (float)$value,
+				];
+
+			case 'boolean':
+			case 'bool':
+				$value = strtolower($value);
+				return match ($value) {
+					'true' => [
+						'value' => true,
+						'readable-value' => 'boolean ' . $value,
+					],
+					'false' => [
+						'value' => false,
+						'readable-value' => 'boolean ' . $value,
+					],
+					default => throw new \InvalidArgumentException('Unable to parse value as boolean'),
+				};
+
+			case 'null':
+				return [
+					'value' => null,
+					'readable-value' => 'null',
+				];
+
+			case 'string':
+				$value = (string)$value;
+				return [
+					'value' => $value,
+					'readable-value' => ($value === '') ? 'empty string' : 'string ' . $value,
+				];
+
+			case 'json':
+				$value = json_decode($value, true);
+				return [
+					'value' => $value,
+					'readable-value' => 'json ' . json_encode($value),
+				];
+
+			default:
+				throw new \InvalidArgumentException('Invalid type');
+		}
+	}
+}
diff --git a/core/Command/Config/System/SetConfig.php b/core/Command/Config/System/SetConfig.php
index 62ab7f7120f..1b1bdc66a6e 100644
--- a/core/Command/Config/System/SetConfig.php
+++ b/core/Command/Config/System/SetConfig.php
@@ -17,6 +17,7 @@ use Symfony\Component\Console\Output\OutputInterface;
 class SetConfig extends Base {
 	public function __construct(
 		SystemConfig $systemConfig,
+		private CastHelper $castHelper,
 	) {
 		parent::__construct($systemConfig);
 	}
@@ -57,7 +58,7 @@ class SetConfig extends Base {
 	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$configNames = $input->getArgument('name');
 		$configName = $configNames[0];
-		$configValue = $this->castValue($input->getOption('value'), $input->getOption('type'));
+		$configValue = $this->castHelper->castValue($input->getOption('value'), $input->getOption('type'));
 		$updateOnly = $input->getOption('update-only');
 
 		if (count($configNames) > 1) {
@@ -80,80 +81,6 @@ class SetConfig extends Base {
 		return 0;
 	}
 
-	/**
-	 * @param string $value
-	 * @param string $type
-	 * @return mixed
-	 * @throws \InvalidArgumentException
-	 */
-	protected function castValue($value, $type) {
-		switch ($type) {
-			case 'integer':
-			case 'int':
-				if (!is_numeric($value)) {
-					throw new \InvalidArgumentException('Non-numeric value specified');
-				}
-				return [
-					'value' => (int)$value,
-					'readable-value' => 'integer ' . (int)$value,
-				];
-
-			case 'double':
-			case 'float':
-				if (!is_numeric($value)) {
-					throw new \InvalidArgumentException('Non-numeric value specified');
-				}
-				return [
-					'value' => (float)$value,
-					'readable-value' => 'double ' . (float)$value,
-				];
-
-			case 'boolean':
-			case 'bool':
-				$value = strtolower($value);
-				switch ($value) {
-					case 'true':
-						return [
-							'value' => true,
-							'readable-value' => 'boolean ' . $value,
-						];
-
-					case 'false':
-						return [
-							'value' => false,
-							'readable-value' => 'boolean ' . $value,
-						];
-
-					default:
-						throw new \InvalidArgumentException('Unable to parse value as boolean');
-				}
-
-				// no break
-			case 'null':
-				return [
-					'value' => null,
-					'readable-value' => 'null',
-				];
-
-			case 'string':
-				$value = (string)$value;
-				return [
-					'value' => $value,
-					'readable-value' => ($value === '') ? 'empty string' : 'string ' . $value,
-				];
-
-			case 'json':
-				$value = json_decode($value, true);
-				return [
-					'value' => $value,
-					'readable-value' => 'json ' . json_encode($value),
-				];
-
-			default:
-				throw new \InvalidArgumentException('Invalid type');
-		}
-	}
-
 	/**
 	 * @param array $configNames
 	 * @param mixed $existingValues
diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
index 2c1872e23d9..91503349e59 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -1225,6 +1225,7 @@ return array(
     'OC\\Core\\Command\\Config\\Import' => $baseDir . '/core/Command/Config/Import.php',
     'OC\\Core\\Command\\Config\\ListConfigs' => $baseDir . '/core/Command/Config/ListConfigs.php',
     'OC\\Core\\Command\\Config\\System\\Base' => $baseDir . '/core/Command/Config/System/Base.php',
+    'OC\\Core\\Command\\Config\\System\\CastHelper' => $baseDir . '/core/Command/Config/System/CastHelper.php',
     'OC\\Core\\Command\\Config\\System\\DeleteConfig' => $baseDir . '/core/Command/Config/System/DeleteConfig.php',
     'OC\\Core\\Command\\Config\\System\\GetConfig' => $baseDir . '/core/Command/Config/System/GetConfig.php',
     'OC\\Core\\Command\\Config\\System\\SetConfig' => $baseDir . '/core/Command/Config/System/SetConfig.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index 9e843c976d5..ccc4f6de725 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -1274,6 +1274,7 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
         'OC\\Core\\Command\\Config\\Import' => __DIR__ . '/../../..' . '/core/Command/Config/Import.php',
         'OC\\Core\\Command\\Config\\ListConfigs' => __DIR__ . '/../../..' . '/core/Command/Config/ListConfigs.php',
         'OC\\Core\\Command\\Config\\System\\Base' => __DIR__ . '/../../..' . '/core/Command/Config/System/Base.php',
+        'OC\\Core\\Command\\Config\\System\\CastHelper' => __DIR__ . '/../../..' . '/core/Command/Config/System/CastHelper.php',
         'OC\\Core\\Command\\Config\\System\\DeleteConfig' => __DIR__ . '/../../..' . '/core/Command/Config/System/DeleteConfig.php',
         'OC\\Core\\Command\\Config\\System\\GetConfig' => __DIR__ . '/../../..' . '/core/Command/Config/System/GetConfig.php',
         'OC\\Core\\Command\\Config\\System\\SetConfig' => __DIR__ . '/../../..' . '/core/Command/Config/System/SetConfig.php',
diff --git a/tests/Core/Command/Config/System/CastHelperTest.php b/tests/Core/Command/Config/System/CastHelperTest.php
new file mode 100644
index 00000000000..0d3ca032026
--- /dev/null
+++ b/tests/Core/Command/Config/System/CastHelperTest.php
@@ -0,0 +1,69 @@
+<?php
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+namespace Core\Command\Config\System;
+
+use OC\Core\Command\Config\System\CastHelper;
+use Test\TestCase;
+
+class CastHelperTest extends TestCase {
+	private CastHelper $castHelper;
+
+	protected function setUp(): void {
+		parent::setUp();
+		$this->castHelper = new CastHelper();
+	}
+
+	public static function castValueProvider(): array {
+		return [
+			[null, 'string', ['value' => '', 'readable-value' => 'empty string']],
+
+			['abc', 'string', ['value' => 'abc', 'readable-value' => 'string abc']],
+
+			['123', 'integer', ['value' => 123, 'readable-value' => 'integer 123']],
+			['456', 'int', ['value' => 456, 'readable-value' => 'integer 456']],
+
+			['2.25', 'double', ['value' => 2.25, 'readable-value' => 'double 2.25']],
+			['0.5', 'float', ['value' => 0.5, 'readable-value' => 'double 0.5']],
+
+			['', 'null', ['value' => null, 'readable-value' => 'null']],
+
+			['true', 'boolean', ['value' => true, 'readable-value' => 'boolean true']],
+			['false', 'bool', ['value' => false, 'readable-value' => 'boolean false']],
+		];
+	}
+
+	/**
+	 * @dataProvider castValueProvider
+	 */
+	public function testCastValue($value, $type, $expectedValue): void {
+		$this->assertSame(
+			$expectedValue,
+			$this->castHelper->castValue($value, $type)
+		);
+	}
+
+	public static function castValueInvalidProvider(): array {
+		return [
+			['123', 'foobar'],
+
+			[null, 'integer'],
+			['abc', 'integer'],
+			['76ggg', 'double'],
+			['true', 'float'],
+			['foobar', 'boolean'],
+		];
+	}
+
+	/**
+	 * @dataProvider castValueInvalidProvider
+	 */
+	public function testCastValueInvalid($value, $type): void {
+		$this->expectException(\InvalidArgumentException::class);
+
+		$this->castHelper->castValue($value, $type);
+	}
+}
diff --git a/tests/Core/Command/Config/System/SetConfigTest.php b/tests/Core/Command/Config/System/SetConfigTest.php
index 2905af5c3d7..cf44058f670 100644
--- a/tests/Core/Command/Config/System/SetConfigTest.php
+++ b/tests/Core/Command/Config/System/SetConfigTest.php
@@ -7,6 +7,7 @@
 
 namespace Tests\Core\Command\Config\System;
 
+use OC\Core\Command\Config\System\CastHelper;
 use OC\Core\Command\Config\System\SetConfig;
 use OC\SystemConfig;
 use Symfony\Component\Console\Input\InputInterface;
@@ -35,7 +36,7 @@ class SetConfigTest extends TestCase {
 		$this->consoleOutput = $this->getMockBuilder(OutputInterface::class)->getMock();
 
 		/** @var \OC\SystemConfig $systemConfig */
-		$this->command = new SetConfig($systemConfig);
+		$this->command = new SetConfig($systemConfig, new CastHelper());
 	}