From 7ae086b63f8ea76162f4c5b803eb6667ea65f23e Mon Sep 17 00:00:00 2001
From: Git'Fellow <12234510+solracsf@users.noreply.github.com>
Date: Mon, 27 May 2024 19:21:03 +0200
Subject: [PATCH] Fix backport

Signed-off-by: Git'Fellow <12234510+solracsf@users.noreply.github.com>
---
 lib/private/Files/View.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/private/Files/View.php b/lib/private/Files/View.php
index f524debfb56..d047ea4e53e 100644
--- a/lib/private/Files/View.php
+++ b/lib/private/Files/View.php
@@ -732,6 +732,11 @@ class View {
 	public function rename($source, $target) {
 		$absolutePath1 = Filesystem::normalizePath($this->getAbsolutePath($source));
 		$absolutePath2 = Filesystem::normalizePath($this->getAbsolutePath($target));
+
+		if (str_starts_with($absolutePath2, $absolutePath1 . '/')) {
+			throw new ForbiddenException("Moving a folder into a child folder is forbidden", false);
+		}
+
 		$result = false;
 		if (
 			Filesystem::isValidPath($target)