diff --git a/src/api/feedbackHandlers.ts b/src/api/feedbackHandlers.ts
index 3ac12780..e87ed8a0 100644
--- a/src/api/feedbackHandlers.ts
+++ b/src/api/feedbackHandlers.ts
@@ -9,7 +9,9 @@ async function readJsonBody(c: ApiContext): Promise<Record<string, unknown>> {
   if (c.req.method !== 'POST') {
     return {};
   }
-  return c.req.json<Record<string, unknown>>().catch(() => ({}));
+  const body = await c.req.json<unknown>().catch(() => ({}));
+  // JSON 본문이 null 등 객체가 아니면 빈 요청으로 처리합니다.
+  return typeof body === 'object' && body !== null ? (body as Record<string, unknown>) : {};
 }
 
 function queryInput(c: ApiContext): Partial<DeveloperRequestInput> {
diff --git a/tests/app/app-api-feedback.test.ts b/tests/app/app-api-feedback.test.ts
index dd38ef28..63f21c29 100644
--- a/tests/app/app-api-feedback.test.ts
+++ b/tests/app/app-api-feedback.test.ts
@@ -133,6 +133,18 @@ describe('/api/feedback/requests', () => {
     expect(data.error.code).toBe('MISSING_FEEDBACK_TITLE');
   });
 
+  it('null JSON 본문은 빈 요청으로 처리해 필수값 오류를 반환한다', async () => {
+    const res = await app.request('/api/feedback/requests', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: 'null',
+    });
+
+    expect(res.status).toBe(400);
+    const data = await res.json();
+    expect(data.error.code).toBe('MISSING_FEEDBACK_TITLE');
+  });
+
   it('Supabase 저장 실패를 500으로 반환한다', async () => {
     mockFetch.mockRejectedValue('raw failure');