diff --git a/backend/open_webui/routers/folders.py b/backend/open_webui/routers/folders.py
index fbc3994296..448cd7abe5 100644
--- a/backend/open_webui/routers/folders.py
+++ b/backend/open_webui/routers/folders.py
@@ -349,6 +349,18 @@ async def update_folder_name_by_id(
             )
 
     if folder:
+        if (
+            user.role != 'admin'
+            and user.id != folder.user_id
+            and form_data.data
+            and 'share_mode' in form_data.data
+            and form_data.data['share_mode'] != (folder.data or {}).get('share_mode')
+        ):
+            raise HTTPException(
+                status_code=status.HTTP_403_FORBIDDEN,
+                detail=ERROR_MESSAGES.ACCESS_PROHIBITED,
+            )
+
         if form_data.name is not None:
             # Check if folder with same name exists
             existing_folder = await Folders.get_folder_by_parent_id_and_user_id_and_name(
@@ -532,13 +544,12 @@ async def update_folder_access_by_id(
             detail=ERROR_MESSAGES.NOT_FOUND,
         )
 
-    # Only owner, admin, or write-granted user can update access
+    # Editing folder contents does not grant permission to manage sharing.
     if user.role != 'admin' and user.id != folder.user_id:
-        if not await _has_folder_access(user.id, folder, 'write', db):
-            raise HTTPException(
-                status_code=status.HTTP_403_FORBIDDEN,
-                detail=ERROR_MESSAGES.ACCESS_PROHIBITED,
-            )
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail=ERROR_MESSAGES.ACCESS_PROHIBITED,
+        )
 
     form_data.access_grants = await filter_allowed_access_grants(
         await Config.get('user.permissions'),
diff --git a/src/lib/components/chat/Placeholder/FolderTitle.svelte b/src/lib/components/chat/Placeholder/FolderTitle.svelte
index db60a187f8..cb09042d73 100644
--- a/src/lib/components/chat/Placeholder/FolderTitle.svelte
+++ b/src/lib/components/chat/Placeholder/FolderTitle.svelte
@@ -9,7 +9,7 @@
 
 	import { toast } from 'svelte-sonner';
 
-	import { selectedFolder } from '$lib/stores';
+	import { selectedFolder, user } from '$lib/stores';
 
 	import {
 		deleteFolderById,
@@ -247,6 +247,7 @@
 		{#if !readOnly}
 			<div class="flex items-center translate-x-2.5">
 				<FolderMenu
+					canShare={$user?.role === 'admin' || folder.user_id === $user?.id}
 					align="end"
 					onEdit={() => {
 						showFolderModal = true;
diff --git a/src/lib/components/layout/Sidebar/Folders/FolderMenu.svelte b/src/lib/components/layout/Sidebar/Folders/FolderMenu.svelte
index 7b3700d771..8d916b0af6 100644
--- a/src/lib/components/layout/Sidebar/Folders/FolderMenu.svelte
+++ b/src/lib/components/layout/Sidebar/Folders/FolderMenu.svelte
@@ -18,6 +18,7 @@
 	export let onEdit = () => {};
 	export let onExport = () => {};
 	export let onShare = () => {};
+	export let canShare = false;
 	export let onDelete = () => {};
 	export let onCreateSubFolder = () => {};
 	export let onMarkAllRead = () => {};
@@ -92,15 +93,17 @@
 				<div class="flex items-center">{$i18n.t('Export')}</div>
 			</button>
 
-			<button
-				class="flex h-[1.6875rem] w-full items-center gap-2 rounded-xl px-2 text-[0.8125rem] select-none cursor-pointer hover:bg-gray-100 dark:hover:bg-gray-900"
-				on:click={() => {
-					onShare();
-				}}
-			>
-				<ShareIcon className="size-3.5" />
-				<div class="flex items-center">{$i18n.t('Share')}</div>
-			</button>
+			{#if canShare}
+				<button
+					class="flex h-[1.6875rem] w-full items-center gap-2 rounded-xl px-2 text-[0.8125rem] select-none cursor-pointer hover:bg-gray-100 dark:hover:bg-gray-900"
+					on:click={() => {
+						onShare();
+					}}
+				>
+					<ShareIcon className="size-3.5" />
+					<div class="flex items-center">{$i18n.t('Share')}</div>
+				</button>
+			{/if}
 
 			<hr class="border-gray-50/30 dark:border-gray-800/30 mx-1 my-0.5" />
 
diff --git a/src/lib/components/layout/Sidebar/RecursiveFolder.svelte b/src/lib/components/layout/Sidebar/RecursiveFolder.svelte
index d8f68ae8cb..cec72455c9 100644
--- a/src/lib/components/layout/Sidebar/RecursiveFolder.svelte
+++ b/src/lib/components/layout/Sidebar/RecursiveFolder.svelte
@@ -861,6 +861,7 @@
 						class="absolute z-10 right-2 hover-reveal self-center flex items-center dark:text-gray-300"
 					>
 						<FolderMenu
+							canShare={$user?.role === 'admin' || !folders[folderId]?.shared}
 							onEdit={() => {
 								showFolderModal = true;
 							}}