2 files changed, 7 insertions, 0 deletions
diff --git a/packages/backend/src/services/note/create.ts b/packages/backend/src/services/note/create.ts
index f14bc2059b..ceb5e8cc71 100644
--- a/packages/backend/src/services/note/create.ts
+++ b/packages/backend/src/services/note/create.ts
@@ -187,6 +187,8 @@ export default async (user: { id: User['id']; username: User['username']; host:
 
 	if (data.text) {
 		data.text = data.text.trim();
+	} else {
+		data.text = null;
 	}
 
 	let tags = data.apHashtags;
diff --git a/packages/backend/src/services/note/reaction/create.ts b/packages/backend/src/services/note/reaction/create.ts
index 5a0948bca9..83d302826a 100644
--- a/packages/backend/src/services/note/reaction/create.ts
+++ b/packages/backend/src/services/note/reaction/create.ts
@@ -27,6 +27,11 @@ export default async (user: { id: User['id']; host: User['host']; }, note: Note,
 		}
 	}
 
+	// check visibility
+	if (!await Notes.isVisibleForMe(note, user.id)) {
+		throw new IdentifiableError('68e9d2d1-48bf-42c2-b90a-b20e09fd3d48', 'Note not accessible for you.');
+	}
+
 	// TODO: cache
 	reaction = await toDbReaction(reaction, user.host);