diff --git a/apps/web/pages/teams/index.tsx b/apps/web/pages/teams/index.tsx
index 7785e8b873..acd2bdc653 100644
--- a/apps/web/pages/teams/index.tsx
+++ b/apps/web/pages/teams/index.tsx
@@ -18,7 +18,7 @@ function Teams() {
           size="fab"
           StartIcon={Icon.FiPlus}
           type="button"
-          href={`${WEBAPP_URL}/settings/teams/new?returnTo=/teams`}>
+          href={`${WEBAPP_URL}/settings/teams/new?returnTo=${WEBAPP_URL}/teams`}>
           {t("new")}
         </Button>
       }>
diff --git a/packages/features/ee/teams/components/CreateANewTeamForm.tsx b/packages/features/ee/teams/components/CreateANewTeamForm.tsx
index f77c2e3572..8ddbb26fbd 100644
--- a/packages/features/ee/teams/components/CreateANewTeamForm.tsx
+++ b/packages/features/ee/teams/components/CreateANewTeamForm.tsx
@@ -2,6 +2,7 @@ import { useRouter } from "next/router";
 import { Controller, useForm } from "react-hook-form";
 import { z } from "zod";
 
+import { getSafeRedirectUrl } from "@calcom/lib/getSafeRedirectUrl";
 import { useLocale } from "@calcom/lib/hooks/useLocale";
 import slugify from "@calcom/lib/slugify";
 import { trpc } from "@calcom/trpc/react";
@@ -19,7 +20,9 @@ export const CreateANewTeamForm = () => {
 
   const returnToParsed = querySchema.safeParse(router.query);
 
-  const returnToParam = returnToParsed.success ? returnToParsed.data.returnTo : "/settings/teams";
+  const returnToParam =
+    (returnToParsed.success ? getSafeRedirectUrl(returnToParsed.data.returnTo) : "/settings/teams") ||
+    "/settings/teams";
 
   const newTeamFormMethods = useForm<NewTeamFormValues>();
 
diff --git a/packages/lib/getSafeRedirectUrl.ts b/packages/lib/getSafeRedirectUrl.ts
index 1ddf4acced..2c9688eb84 100644
--- a/packages/lib/getSafeRedirectUrl.ts
+++ b/packages/lib/getSafeRedirectUrl.ts
@@ -5,6 +5,8 @@ export const getSafeRedirectUrl = (url = "") => {
   if (!url) {
     return null;
   }
+
+  //It is important that this fn is given absolute URL because urls that don't start with HTTP can still deceive browser into redirecting to another domain
   if (url.search(/^https?:\/\//) === -1) {
     throw new Error("Pass an absolute URL");
   }
diff --git a/packages/trpc/server/routers/viewer.tsx b/packages/trpc/server/routers/viewer.tsx
index fa1d0f5303..f1309c81f0 100644
--- a/packages/trpc/server/routers/viewer.tsx
+++ b/packages/trpc/server/routers/viewer.tsx
@@ -397,8 +397,23 @@ const loggedInViewerRouter = router({
 
       let where;
 
-      if (eventTypeId) where = { eventTypeId };
-      else where = { userId: user.id };
+      if (eventTypeId) {
+        if (
+          !(await prisma.eventType.findFirst({
+            where: {
+              id: eventTypeId,
+              userId: user.id,
+            },
+          }))
+        ) {
+          throw new TRPCError({
+            code: "UNAUTHORIZED",
+            message: `You don't have access to event type ${eventTypeId}`,
+          });
+        }
+
+        where = { eventTypeId };
+      } else where = { userId: user.id };
 
       await ctx.prisma.destinationCalendar.upsert({
         where,
@@ -726,42 +741,7 @@ const loggedInViewerRouter = router({
         })
       );
     }),
-  eventTypePosition: authedProcedure
-    .input(
-      z.object({
-        eventType: z.number(),
-        action: z.string(),
-      })
-    )
-    .mutation(async ({ input, ctx }) => {
-      // This mutation is for the user to be able to order their event types by incrementing or decrementing the position number
-      const { prisma } = ctx;
-      if (input.eventType && input.action == "increment") {
-        await prisma.eventType.update({
-          where: {
-            id: input.eventType,
-          },
-          data: {
-            position: {
-              increment: 1,
-            },
-          },
-        });
-      }
-
-      if (input.eventType && input.action == "decrement") {
-        await prisma.eventType.update({
-          where: {
-            id: input.eventType,
-          },
-          data: {
-            position: {
-              decrement: 1,
-            },
-          },
-        });
-      }
-    }),
+  //Comment for PR: eventTypePosition is not used anywhere
   submitFeedback: authedProcedure
     .input(
       z.object({
diff --git a/packages/trpc/server/routers/viewer/availability.tsx b/packages/trpc/server/routers/viewer/availability.tsx
index 9a9b7bcff2..a69254342d 100644
--- a/packages/trpc/server/routers/viewer/availability.tsx
+++ b/packages/trpc/server/routers/viewer/availability.tsx
@@ -173,7 +173,6 @@ export const availabilityRouter = router({
       .input(
         z.object({
           name: z.string(),
-          copyScheduleId: z.number().optional(),
           schedule: z
             .array(
               z.array(
@@ -189,6 +188,22 @@ export const availabilityRouter = router({
       )
       .mutation(async ({ input, ctx }) => {
         const { user, prisma } = ctx;
+        if (input.eventTypeId) {
+          const eventType = await prisma.eventType.findUnique({
+            where: {
+              id: input.eventTypeId,
+            },
+            select: {
+              userId: true,
+            },
+          });
+          if (!eventType || eventType.userId !== user.id) {
+            throw new TRPCError({
+              code: "UNAUTHORIZED",
+              message: "You are not authorized to create a schedule for this event type",
+            });
+          }
+        }
         const data: Prisma.ScheduleCreateInput = {
           name: input.name,
           user: {
diff --git a/packages/trpc/server/routers/viewer/bookings.tsx b/packages/trpc/server/routers/viewer/bookings.tsx
index fcb44990c5..38af479dba 100644
--- a/packages/trpc/server/routers/viewer/bookings.tsx
+++ b/packages/trpc/server/routers/viewer/bookings.tsx
@@ -818,6 +818,22 @@ export const bookingsRouter = router({
     };
 
     const recurringEvent = parseRecurringEvent(booking.eventType?.recurringEvent);
+    if (recurringEventId) {
+      if (
+        !(await prisma.booking.findFirst({
+          where: {
+            recurringEventId,
+            id: booking.id,
+          },
+        }))
+      ) {
+        // FIXME: It might be best to retrieve recurringEventId from the booking itself.
+        throw new TRPCError({
+          code: "UNAUTHORIZED",
+          message: "Recurring event id doesn't belong to the booking",
+        });
+      }
+    }
     if (recurringEventId && recurringEvent) {
       const groupedRecurringBookings = await prisma.booking.groupBy({
         where: {