diff --git a/frappe/core/doctype/user/test_user.py b/frappe/core/doctype/user/test_user.py
index 62cba4c54c..a091eeff2e 100644
--- a/frappe/core/doctype/user/test_user.py
+++ b/frappe/core/doctype/user/test_user.py
@@ -292,7 +292,7 @@ class TestUser(IntegrationTestCase):
 		c = FrappeClient(url)
 		res1 = c.session.post(url, data=data, verify=c.verify, headers=c.headers)
 		res2 = c.session.post(url, data=data, verify=c.verify, headers=c.headers)
-		self.assertEqual(res1.status_code, 404)
+		self.assertEqual(res1.status_code, 200)
 		self.assertEqual(res2.status_code, 429)
 
 	def test_user_rename(self):
@@ -431,15 +431,28 @@ class TestUser(IntegrationTestCase):
 			update_password(old_password, old_password=new_password)
 			self.assertEqual(
 				frappe.message_log[0].get("message"),
-				f"Password reset instructions have been sent to {test_user.full_name}'s email",
+				"If this email is registered with us, we have sent password reset instructions to it. Please check your inbox.",
 			)
 
 		sendmail.assert_called_once()
 		self.assertEqual(sendmail.call_args[1]["recipients"], "test2@example.com")
 
-		self.assertEqual(reset_password(user="test2@example.com"), None)
-		self.assertEqual(reset_password(user="Administrator"), "not allowed")
-		self.assertEqual(reset_password(user="random"), "not found")
+		# Constant-response guarantee: every path — existing user, Administrator,
+		# and non-existent user — must return None AND enqueue the same generic
+		# message, so callers cannot distinguish between them.
+		_GENERIC_MSG = "If this email is registered with us, we have sent password reset instructions to it. Please check your inbox."
+
+		frappe.clear_messages()
+		self.assertIsNone(reset_password(user="test2@example.com"))
+		self.assertEqual(frappe.message_log[0].get("message"), _GENERIC_MSG)
+
+		frappe.clear_messages()
+		self.assertIsNone(reset_password(user="Administrator"))
+		self.assertEqual(frappe.message_log[0].get("message"), _GENERIC_MSG)
+
+		frappe.clear_messages()
+		self.assertIsNone(reset_password(user="random"))
+		self.assertEqual(frappe.message_log[0].get("message"), _GENERIC_MSG)
 
 	def test_user_onload_modules(self):
 		from frappe.desk.form.load import getdoc
diff --git a/frappe/core/doctype/user/user.py b/frappe/core/doctype/user/user.py
index cfb86e4c8e..02a7604ea3 100644
--- a/frappe/core/doctype/user/user.py
+++ b/frappe/core/doctype/user/user.py
@@ -1152,25 +1152,32 @@ def sign_up(email: str, full_name: str, redirect_to: str) -> tuple[int, str]:
 
 @frappe.whitelist(allow_guest=True, methods=["POST"])
 @rate_limit(limit=get_password_reset_limit, seconds=60 * 60)
-def reset_password(user: str) -> str:
+def reset_password(user: str) -> None:
+	# Always return the same generic response regardless of whether the user
+	# exists, is disabled, or is restricted. This prevents username enumeration
+	# via different messages or HTTP status codes (CWE-204).
+
 	try:
-		user: User = frappe.get_doc("User", user)
-		if user.name == "Administrator":
-			return "not allowed"
-		if not user.enabled:
-			return "disabled"
-
-		user.validate_reset_password()
-		user._reset_password(send_email=True)
-
-		return frappe.msgprint(
-			msg=_("Password reset instructions have been sent to {}'s email").format(user.full_name),
-			title=_("Password Email Sent"),
-		)
+		user_doc: User = frappe.get_doc("User", user)
+		if user_doc.name != "Administrator" and user_doc.enabled:
+			user_doc.validate_reset_password()
+			user_doc._reset_password(send_email=True)
+		# For Administrator or disabled users: silently skip — same response below
 	except frappe.DoesNotExistError:
-		frappe.local.response["http_status_code"] = 404
 		frappe.clear_messages()
-		return "not found"
+	except frappe.OutgoingEmailError:
+		frappe.clear_messages()
+		frappe.log_error(title="Password reset email could not be sent", message=frappe.get_traceback())
+	except Exception:
+		frappe.clear_messages()
+		frappe.log_error(title="Password reset failed unexpectedly", message=frappe.get_traceback())
+
+	frappe.msgprint(
+		msg=_(
+			"If this email is registered with us, we have sent password reset instructions to it. Please check your inbox."
+		),
+		title=_("Password Reset"),
+	)
 
 
 @frappe.whitelist()
diff --git a/frappe/templates/includes/login/login.js b/frappe/templates/includes/login/login.js
index acaafa1199..98ab1acc33 100644
--- a/frappe/templates/includes/login/login.js
+++ b/frappe/templates/includes/login/login.js
@@ -247,17 +247,9 @@ login.login_handlers = (function () {
 					window.location.href = data.home_page;
 				}
 			} else if (window.location.hash === '#forgot') {
-				if (data.message === 'not found') {
-					login.set_status({{ _("Not a valid user") | tojson }}, 'red');
-				} else if (data.message == 'not allowed') {
-					login.set_status({{ _("Not Allowed") | tojson }}, 'red');
-				} else if (data.message == 'disabled') {
-					login.set_status({{ _("Not Allowed: Disabled User") | tojson }}, 'red');
-				} else {
-					login.set_status({{ _("Instructions Emailed") | tojson }}, 'green');
-				}
-
-
+				// Always show the same message regardless of whether the account
+				// exists or not, to prevent username enumeration (CWE-204).
+				login.set_status({{ _("Instructions Emailed") | tojson }}, 'green');
 			} else if (window.location.hash === '#signup') {
 				if (cint(data.message[0]) == 0) {
 					login.set_status(data.message[1], 'red');
@@ -285,7 +277,6 @@ login.login_handlers = (function () {
 		},
 		401: get_error_handler({{ _("Invalid Login. Try again.") | tojson }}),
 		417: get_error_handler({{ _("Oops! Something went wrong.") | tojson }}),
-		404: get_error_handler({{ _("User does not exist.") | tojson }}),
 		429: get_error_handler({{ _("Too many requests. Please try again later.") | tojson }}),
 		500: get_error_handler({{ _("Something went wrong.") | tojson }}),
 	};