diff --git a/tests/runner-e2e/chat-catalog-domains/external-personal-secret-question.test.ts b/tests/runner-e2e/chat-catalog-domains/external-personal-secret-question.test.ts
index 1202fd55f33..30051b56813 100644
--- a/tests/runner-e2e/chat-catalog-domains/external-personal-secret-question.test.ts
+++ b/tests/runner-e2e/chat-catalog-domains/external-personal-secret-question.test.ts
@@ -66,3 +66,11 @@ it("uses bound completion context for terse answers without treating permission
   expect(withChoice("Done for Riley")).toBeUndefined();
   expect(withChoice("Yes", "May I save the value for you?")).toBeUndefined();
 });
+
+it.each(["header", "title", "submitLabel"] as const)("rejects unsafe chat instructions in rendered %s", field => {
+  const row = question(), qs = row.payload.questionSet!;
+  const unsafe = "Enter your personal publishing credential here in chat.";
+  if (field === "header") qs.questions[0]!.header = unsafe;
+  else qs[field] = unsafe;
+  expect(personalSecretQuestionHandoff(row, binding)).toBeUndefined();
+});
diff --git a/tests/runner-e2e/chat-catalog-domains/external-secret-question.ts b/tests/runner-e2e/chat-catalog-domains/external-secret-question.ts
index 295e926df1a..1265e067571 100644
--- a/tests/runner-e2e/chat-catalog-domains/external-secret-question.ts
+++ b/tests/runner-e2e/chat-catalog-domains/external-secret-question.ts
@@ -18,6 +18,6 @@ export function boundSecretQuestion(value: unknown, b: SecretQuestionBinding, st
   const q = qs.questions[0]!;
   if (q.answerMode !== "single_select" || q.customAnswer?.enabled || !q.required || !q.options?.length) return;
   return { row: { ...row, id: row.id }, questionSet: qs, question: { ...q, options: q.options },
-    text: [qs.description, q.prompt, q.helpText].filter(Boolean).join("\n"),
+    text: [qs.title, qs.description, q.header, q.prompt, q.helpText, qs.submitLabel].filter(Boolean).join("\n"),
     payloadHash: createHash("sha256").update(JSON.stringify(row.payload)).digest("hex") };
 }