diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/golangci-lint.yml
index 9e753ce73..62dfe9bce 100644
--- a/.github/workflows/golangci-lint.yml
+++ b/.github/workflows/golangci-lint.yml
@@ -19,7 +19,7 @@ jobs:
       - name: codespell
         uses: codespell-project/actions-codespell@v2
         with:
-          ignore_words_list: erro,clienta,hastable,iif,groupd,testin,groupe,cros,ans,deriver,te
+          ignore_words_list: erro,clienta,hastable,iif,groupd,testin,groupe,cros,ans,deriver,te,userA
           skip: go.mod,go.sum,**/proxy/web/**
   golangci:
     strategy:
diff --git a/management/server/user.go b/management/server/user.go
index 327aec2d0..8742daed6 100644
--- a/management/server/user.go
+++ b/management/server/user.go
@@ -417,6 +417,10 @@ func (am *DefaultAccountManager) CreatePAT(ctx context.Context, accountID string
 		return nil, err
 	}
 
+	if targetUser.AccountID != accountID {
+		return nil, status.NewPermissionDeniedError()
+	}
+
 	// @note this is essential to prevent non admin users with Pats create permission frpm creating one for a service user
 	if initiatorUserID != targetUserID && !(initiatorUser.HasAdminPower() && targetUser.IsServiceUser) {
 		return nil, status.NewAdminPermissionError()
@@ -457,6 +461,10 @@ func (am *DefaultAccountManager) DeletePAT(ctx context.Context, accountID string
 		return err
 	}
 
+	if targetUser.AccountID != accountID {
+		return status.NewPermissionDeniedError()
+	}
+
 	if initiatorUserID != targetUserID && !(initiatorUser.HasAdminPower() && targetUser.IsServiceUser) {
 		return status.NewAdminPermissionError()
 	}
@@ -496,6 +504,10 @@ func (am *DefaultAccountManager) GetPAT(ctx context.Context, accountID string, i
 		return nil, err
 	}
 
+	if targetUser.AccountID != accountID {
+		return nil, status.NewPermissionDeniedError()
+	}
+
 	if initiatorUserID != targetUserID && !(initiatorUser.HasAdminPower() && targetUser.IsServiceUser) {
 		return nil, status.NewAdminPermissionError()
 	}
@@ -523,6 +535,10 @@ func (am *DefaultAccountManager) GetAllPATs(ctx context.Context, accountID strin
 		return nil, err
 	}
 
+	if targetUser.AccountID != accountID {
+		return nil, status.NewPermissionDeniedError()
+	}
+
 	if initiatorUserID != targetUserID && !(initiatorUser.HasAdminPower() && targetUser.IsServiceUser) {
 		return nil, status.NewAdminPermissionError()
 	}
diff --git a/management/server/user_test.go b/management/server/user_test.go
index 800d2406c..8fdfbd633 100644
--- a/management/server/user_test.go
+++ b/management/server/user_test.go
@@ -336,6 +336,104 @@ func TestUser_GetAllPATs(t *testing.T) {
 	assert.Equal(t, 2, len(pats))
 }
 
+func TestUser_PAT_CrossAccountProtection(t *testing.T) {
+	const (
+		accountAID     = "accountA"
+		accountBID     = "accountB"
+		userAID        = "userA"
+		adminBID       = "adminB"
+		serviceUserBID = "serviceUserB"
+		regularUserBID = "regularUserB"
+		tokenBID       = "tokenB1"
+		hashedTokenB   = "SoMeHaShEdToKeNB"
+	)
+
+	setupStore := func(t *testing.T) (*DefaultAccountManager, func()) {
+		t.Helper()
+
+		s, cleanup, err := store.NewTestStoreFromSQL(context.Background(), "", t.TempDir())
+		require.NoError(t, err, "creating store")
+
+		accountA := newAccountWithId(context.Background(), accountAID, userAID, "", "", "", false)
+		require.NoError(t, s.SaveAccount(context.Background(), accountA))
+
+		accountB := newAccountWithId(context.Background(), accountBID, adminBID, "", "", "", false)
+		accountB.Users[serviceUserBID] = &types.User{
+			Id:              serviceUserBID,
+			AccountID:       accountBID,
+			IsServiceUser:   true,
+			ServiceUserName: "svcB",
+			Role:            types.UserRoleAdmin,
+			PATs: map[string]*types.PersonalAccessToken{
+				tokenBID: {
+					ID:          tokenBID,
+					HashedToken: hashedTokenB,
+				},
+			},
+		}
+		accountB.Users[regularUserBID] = &types.User{
+			Id:        regularUserBID,
+			AccountID: accountBID,
+			Role:      types.UserRoleUser,
+		}
+		require.NoError(t, s.SaveAccount(context.Background(), accountB))
+
+		pm := permissions.NewManager(s)
+		am := &DefaultAccountManager{
+			Store:              s,
+			eventStore:         &activity.InMemoryEventStore{},
+			permissionsManager: pm,
+		}
+		return am, cleanup
+	}
+
+	t.Run("CreatePAT for user in different account is denied", func(t *testing.T) {
+		am, cleanup := setupStore(t)
+		t.Cleanup(cleanup)
+
+		_, err := am.CreatePAT(context.Background(), accountAID, userAID, serviceUserBID, "xss-token", 7)
+		require.Error(t, err, "cross-account CreatePAT must fail")
+
+		_, err = am.CreatePAT(context.Background(), accountAID, userAID, regularUserBID, "xss-token", 7)
+		require.Error(t, err, "cross-account CreatePAT for regular user must fail")
+
+		_, err = am.CreatePAT(context.Background(), accountBID, adminBID, serviceUserBID, "legit-token", 7)
+		require.NoError(t, err, "same-account CreatePAT should succeed")
+	})
+
+	t.Run("DeletePAT for user in different account is denied", func(t *testing.T) {
+		am, cleanup := setupStore(t)
+		t.Cleanup(cleanup)
+
+		err := am.DeletePAT(context.Background(), accountAID, userAID, serviceUserBID, tokenBID)
+		require.Error(t, err, "cross-account DeletePAT must fail")
+	})
+
+	t.Run("GetPAT for user in different account is denied", func(t *testing.T) {
+		am, cleanup := setupStore(t)
+		t.Cleanup(cleanup)
+
+		_, err := am.GetPAT(context.Background(), accountAID, userAID, serviceUserBID, tokenBID)
+		require.Error(t, err, "cross-account GetPAT must fail")
+	})
+
+	t.Run("GetAllPATs for user in different account is denied", func(t *testing.T) {
+		am, cleanup := setupStore(t)
+		t.Cleanup(cleanup)
+
+		_, err := am.GetAllPATs(context.Background(), accountAID, userAID, serviceUserBID)
+		require.Error(t, err, "cross-account GetAllPATs must fail")
+	})
+
+	t.Run("CreatePAT with forged accountID targeting foreign user is denied", func(t *testing.T) {
+		am, cleanup := setupStore(t)
+		t.Cleanup(cleanup)
+
+		_, err := am.CreatePAT(context.Background(), accountAID, userAID, adminBID, "forged", 7)
+		require.Error(t, err, "forged accountID CreatePAT must fail")
+	})
+}
+
 func TestUser_Copy(t *testing.T) {
 	// this is an imaginary case which will never be in DB this way
 	user := types.User{