diff --git a/apps/activity/api/views.py b/apps/activity/api/views.py
index a5644fab..4c335491 100644
--- a/apps/activity/api/views.py
+++ b/apps/activity/api/views.py
@@ -2,7 +2,6 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 from django_filters.rest_framework import DjangoFilterBackend
-
 from api.filters import RegexSafeSearchFilter
 from api.viewsets import ReadProtectedModelViewSet
 
diff --git a/apps/activity/views.py b/apps/activity/views.py
index 74e39fb0..430e876e 100644
--- a/apps/activity/views.py
+++ b/apps/activity/views.py
@@ -19,6 +19,7 @@ from django.views.decorators.cache import cache_page
 from django.views.generic import DetailView, TemplateView, UpdateView
 from django.views.generic.list import ListView
 from django_tables2.views import MultiTableMixin
+from api.viewsets import is_regex
 from note.models import Alias, NoteSpecial, NoteUser
 from permission.backends import PermissionBackend
 from permission.views import ProtectQuerysetMixin, ProtectedCreateView
@@ -212,13 +213,16 @@ class ActivityEntryView(LoginRequiredMixin, TemplateView):
 
         if "search" in self.request.GET and self.request.GET["search"]:
             pattern = self.request.GET["search"]
-            if pattern[0] != "^":
-                pattern = "^" + pattern
+
+            # Check if this is a valid regex. If not, we won't check regex
+            valid_regex = is_regex(pattern)
+            suffix = "__iregex" if valid_regex else "__istartswith"
+            pattern = "^" + pattern if valid_regex and pattern[0] != "^" else pattern
             guest_qs = guest_qs.filter(
-                Q(first_name__iregex=pattern)
-                | Q(last_name__iregex=pattern)
-                | Q(inviter__alias__name__iregex=pattern)
-                | Q(inviter__alias__normalized_name__iregex=Alias.normalize(pattern))
+                Q(**{f"first_name{suffix}": pattern})
+                | Q(**{f"last_name{suffix}": pattern})
+                | Q(**{f"inviter__alias__name{suffix}": pattern})
+                | Q(**{f"inviter__alias__normalized_name{suffix}": Alias.normalize(pattern)})
             )
         else:
             guest_qs = guest_qs.none()
@@ -250,11 +254,15 @@ class ActivityEntryView(LoginRequiredMixin, TemplateView):
 
         if "search" in self.request.GET and self.request.GET["search"]:
             pattern = self.request.GET["search"]
+
+            # Check if this is a valid regex. If not, we won't check regex
+            valid_regex = is_regex(pattern)
+            suffix = "__iregex" if valid_regex else "__icontains"
             note_qs = note_qs.filter(
-                Q(note__noteuser__user__first_name__iregex=pattern)
-                | Q(note__noteuser__user__last_name__iregex=pattern)
-                | Q(name__iregex=pattern)
-                | Q(normalized_name__iregex=Alias.normalize(pattern))
+                Q(**{f"note__noteuser__user__first_name{suffix}": pattern})
+                | Q(**{f"note__noteuser__user__last_name{suffix}": pattern})
+                | Q(**{f"name{suffix}": pattern})
+                | Q(**{f"normalized_name{suffix}": Alias.normalize(pattern)})
             )
         else:
             note_qs = note_qs.none()
diff --git a/apps/api/tests.py b/apps/api/tests.py
index 83d9d936..6be818bf 100644
--- a/apps/api/tests.py
+++ b/apps/api/tests.py
@@ -14,7 +14,6 @@ from django.test import TestCase
 from django_filters.rest_framework import DjangoFilterBackend
 from phonenumbers import PhoneNumber
 from rest_framework.filters import OrderingFilter
-
 from api.filters import RegexSafeSearchFilter
 from member.models import Membership, Club
 from note.models import NoteClub, NoteUser, Alias, Note
diff --git a/apps/api/viewsets.py b/apps/api/viewsets.py
index 341af617..b1d42c50 100644
--- a/apps/api/viewsets.py
+++ b/apps/api/viewsets.py
@@ -1,6 +1,8 @@
 # Copyright (C) 2018-2024 by BDE ENS Paris-Saclay
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+import re
+
 from django.contrib.contenttypes.models import ContentType
 from django_filters.rest_framework import DjangoFilterBackend
 from django.db.models import Q
@@ -14,6 +16,14 @@ from .filters import RegexSafeSearchFilter
 from .serializers import UserSerializer, ContentTypeSerializer
 
 
+def is_regex(pattern):
+    try:
+        re.compile(pattern)
+        return True
+    except (re.error, TypeError):
+        return False
+
+
 class ReadProtectedModelViewSet(ModelViewSet):
     """
     Protect a ModelViewSet by filtering the objects that the user cannot see.
@@ -60,34 +70,38 @@ class UserViewSet(ReadProtectedModelViewSet):
 
         if "search" in self.request.GET:
             pattern = self.request.GET["search"]
+            # Check if this is a valid regex. If not, we won't check regex
+            valid_regex = is_regex(pattern)
+            suffix = "__iregex" if valid_regex else "__istartswith"
+            prefix = "^" if valid_regex else ""
 
             # Filter with different rules
             # We use union-all to keep each filter rule sorted in result
             queryset = queryset.filter(
                 # Match without normalization
-                note__alias__name__iregex="^" + pattern
+                Q(**{f"note__alias__name{suffix}": prefix + pattern})
             ).union(
                 queryset.filter(
                     # Match with normalization
-                    Q(note__alias__normalized_name__iregex="^" + Alias.normalize(pattern))
-                    & ~Q(note__alias__name__iregex="^" + pattern)
+                    Q(**{f"note__alias__normalized_name{suffix}": prefix + Alias.normalize(pattern)})
+                    & ~Q(**{f"note__alias__name{suffix}": prefix + pattern})
                 ),
                 all=True,
             ).union(
                 queryset.filter(
                     # Match on lower pattern
-                    Q(note__alias__normalized_name__iregex="^" + pattern.lower())
-                    & ~Q(note__alias__normalized_name__iregex="^" + Alias.normalize(pattern))
-                    & ~Q(note__alias__name__iregex="^" + pattern)
+                    Q(**{f"note__alias__normalized_name{suffix}": prefix + pattern.lower()})
+                    & ~Q(**{f"note__alias__normalized_name{suffix}": prefix + Alias.normalize(pattern)})
+                    & ~Q(**{f"note__alias__name{suffix}": prefix + pattern})
                 ),
                 all=True,
             ).union(
                 queryset.filter(
                     # Match on firstname or lastname
-                    (Q(last_name__iregex="^" + pattern) | Q(first_name__iregex="^" + pattern))
-                    & ~Q(note__alias__normalized_name__iregex="^" + pattern.lower())
-                    & ~Q(note__alias__normalized_name__iregex="^" + Alias.normalize(pattern))
-                    & ~Q(note__alias__name__iregex="^" + pattern)
+                    (Q(**{f"last_name{suffix}": prefix + pattern}) | Q(**{f"first_name{suffix}": prefix + pattern}))
+                    & ~Q(**{f"note__alias__normalized_name{suffix}": prefix + pattern.lower()})
+                    & ~Q(**{f"note__alias__normalized_name{suffix}": prefix + Alias.normalize(pattern)})
+                    & ~Q(**{f"note__alias__name{suffix}": prefix + pattern})
                 ),
                 all=True,
             )
diff --git a/apps/logs/api/views.py b/apps/logs/api/views.py
index bf5aa8a5..655a473a 100644
--- a/apps/logs/api/views.py
+++ b/apps/logs/api/views.py
@@ -3,7 +3,6 @@
 
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.filters import OrderingFilter
-
 from api.viewsets import ReadOnlyProtectedModelViewSet
 
 from .serializers import ChangelogSerializer
diff --git a/apps/member/api/views.py b/apps/member/api/views.py
index 5e4e4667..a24a12d6 100644
--- a/apps/member/api/views.py
+++ b/apps/member/api/views.py
@@ -3,7 +3,6 @@
 
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.filters import OrderingFilter
-
 from api.filters import RegexSafeSearchFilter
 from api.viewsets import ReadProtectedModelViewSet
 
diff --git a/apps/member/views.py b/apps/member/views.py
index 45ba81a7..61a7bbf2 100644
--- a/apps/member/views.py
+++ b/apps/member/views.py
@@ -18,6 +18,7 @@ from django.views.generic import DetailView, UpdateView, TemplateView
 from django.views.generic.edit import FormMixin
 from django_tables2.views import SingleTableView
 from rest_framework.authtoken.models import Token
+from api.viewsets import is_regex
 from note.models import Alias, NoteClub, NoteUser, Trust
 from note.models.transactions import Transaction, SpecialTransaction
 from note.tables import HistoryTable, AliasTable, TrustTable, TrustedTable
@@ -219,16 +220,20 @@ class UserListView(ProtectQuerysetMixin, LoginRequiredMixin, SingleTableView):
         if "search" in self.request.GET and self.request.GET["search"]:
             pattern = self.request.GET["search"]
 
+            # Check if this is a valid regex. If not, we won't check regex
+            valid_regex = is_regex(pattern)
+            suffix = "__iregex" if valid_regex else "__istartswith"
+            prefix = "^" if valid_regex else ""
             qs = qs.filter(
-                username__iregex="^" + pattern
+                Q(**{f"username{suffix}": prefix + pattern})
             ).union(
                 qs.filter(
-                    (Q(alias__iregex="^" + pattern)
-                     | Q(normalized_alias__iregex="^" + Alias.normalize(pattern))
-                     | Q(last_name__iregex="^" + pattern)
-                     | Q(first_name__iregex="^" + pattern)
+                    (Q(**{f"alias{suffix}": prefix + pattern})
+                     | Q(**{f"normalized_alias{suffix}": prefix + Alias.normalize(pattern)})
+                     | Q(**{f"last_name{suffix}": prefix + pattern})
+                     | Q(**{f"first_name{suffix}": prefix + pattern})
                      | Q(email__istartswith=pattern))
-                    & ~Q(username__iregex="^" + pattern)
+                    & ~Q(**{f"username{suffix}": prefix + pattern})
                 ), all=True)
         else:
             qs = qs.none()
@@ -410,10 +415,15 @@ class ClubListView(ProtectQuerysetMixin, LoginRequiredMixin, SingleTableView):
         if "search" in self.request.GET:
             pattern = self.request.GET["search"]
 
+            # Check if this is a valid regex. If not, we won't check regex
+            valid_regex = is_regex(pattern)
+            suffix = "__iregex" if valid_regex else "__istartswith"
+            prefix = "^" if valid_regex else ""
+
             qs = qs.filter(
-                Q(name__iregex=pattern)
-                | Q(note__alias__name__iregex=pattern)
-                | Q(note__alias__normalized_name__iregex=Alias.normalize(pattern))
+                Q(**{f"name{suffix}": prefix + pattern})
+                | Q(**{f"note__alias__name{suffix}": prefix + pattern})
+                | Q(**{f"note__alias__normalized_name{suffix}": prefix + Alias.normalize(pattern)})
             )
 
         return qs
@@ -912,10 +922,15 @@ class ClubMembersListView(ProtectQuerysetMixin, LoginRequiredMixin, SingleTableV
 
         if 'search' in self.request.GET:
             pattern = self.request.GET['search']
+
+            # Check if this is a valid regex. If not, we won't check regex
+            valid_regex = is_regex(pattern)
+            suffix = "__iregex" if valid_regex else "__istartswith"
+            prefix = "^" if valid_regex else ""
             qs = qs.filter(
-                Q(user__first_name__iregex='^' + pattern)
-                | Q(user__last_name__iregex='^' + pattern)
-                | Q(user__note__alias__normalized_name__iregex='^' + Alias.normalize(pattern))
+                Q(**{f"user__first_name{suffix}": prefix + pattern})
+                | Q(**{f"user__last_name{suffix}": prefix + pattern})
+                | Q(**{f"user__note__alias__normalized_name{suffix}": prefix + Alias.normalize(pattern)})
             )
 
         only_active = "only_active" not in self.request.GET or self.request.GET["only_active"] != '0'
diff --git a/apps/note/api/views.py b/apps/note/api/views.py
index 4d39a7ce..ee1479be 100644
--- a/apps/note/api/views.py
+++ b/apps/note/api/views.py
@@ -1,19 +1,16 @@
 # Copyright (C) 2018-2024 by BDE ENS Paris-Saclay
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-import re
-
 from django.conf import settings
 from django.db.models import Q
 from django.core.exceptions import ValidationError
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.filters import OrderingFilter
-from rest_framework import viewsets
+from rest_framework import status, viewsets
 from rest_framework.response import Response
-from rest_framework import status
-
 from api.filters import RegexSafeSearchFilter
-from api.viewsets import ReadProtectedModelViewSet, ReadOnlyProtectedModelViewSet
+from api.viewsets import ReadProtectedModelViewSet, ReadOnlyProtectedModelViewSet, \
+    is_regex
 from permission.backends import PermissionBackend
 
 from .serializers import NotePolymorphicSerializer, AliasSerializer, ConsumerSerializer, \
@@ -51,10 +48,14 @@ class NotePolymorphicViewSet(ReadProtectedModelViewSet):
             .distinct()
 
         alias = self.request.query_params.get("alias", ".*")
+        # Check if this is a valid regex. If not, we won't check regex
+        valid_regex = is_regex(alias)
+        suffix = '__iregex' if valid_regex else '__istartswith'
+        alias_prefix = '^' if valid_regex else ''
         queryset = queryset.filter(
-            Q(alias__name__iregex="^" + alias)
-            | Q(alias__normalized_name__iregex="^" + Alias.normalize(alias))
-            | Q(alias__normalized_name__iregex="^" + alias.lower())
+            Q(**{f"alias__name{suffix}": alias_prefix + alias})
+            | Q(**{f"alias__normalized_name{suffix}": alias_prefix + Alias.normalize(alias)})
+            | Q(**{f"alias__normalized_name{suffix}": alias_prefix + alias.lower()})
         )
 
         return queryset.order_by("id")
@@ -68,7 +69,7 @@ class TrustViewSet(ReadProtectedModelViewSet):
     """
     queryset = Trust.objects
     serializer_class = TrustSerializer
-    filter_backends = [SearchFilter, DjangoFilterBackend, OrderingFilter]
+    filter_backends = [RegexSafeSearchFilter, DjangoFilterBackend, OrderingFilter]
     search_fields = ['$trusting__alias__name', '$trusting__alias__normalized_name',
                      '$trusted__alias__name', '$trusted__alias__normalized_name']
     filterset_fields = ['trusting', 'trusting__noteuser__user', 'trusted', 'trusted__noteuser__user']
@@ -94,7 +95,7 @@ class AliasViewSet(ReadProtectedModelViewSet):
     """
     REST API View set.
     The djangorestframework plugin will get all `Alias` objects, serialize it to JSON with the given serializer,
-    then render it on /api/note/aliases/
+    then render it on /api/note/alias/
     """
     queryset = Alias.objects
     serializer_class = AliasSerializer
@@ -129,18 +130,22 @@ class AliasViewSet(ReadProtectedModelViewSet):
 
         alias = self.request.query_params.get("alias", None)
         if alias:
+            # Check if this is a valid regex. If not, we won't check regex
+            valid_regex = is_regex(alias)
+            suffix = '__iregex' if valid_regex else '__istartswith'
+            alias_prefix = '^' if valid_regex else ''
             queryset = queryset.filter(
-                name__iregex="^" + alias
+                **{f"name{suffix}": alias_prefix + alias}
             ).union(
                 queryset.filter(
-                    Q(normalized_name__iregex="^" + Alias.normalize(alias))
-                    & ~Q(name__iregex="^" + alias)
+                    Q(**{f"normalized_name{suffix}": alias_prefix + Alias.normalize(alias)})
+                    & ~Q(**{f"name{suffix}": alias_prefix + alias})
                 ),
                 all=True).union(
                 queryset.filter(
-                    Q(normalized_name__iregex="^" + alias.lower())
-                    & ~Q(normalized_name__iregex="^" + Alias.normalize(alias))
-                    & ~Q(name__iregex="^" + alias)
+                    Q(**{f"normalized_name{suffix}": "^" + alias.lower()})
+                    & ~Q(**{f"normalized_name{suffix}": "^" + Alias.normalize(alias)})
+                    & ~Q(**{f"name{suffix}": "^" + alias})
                 ),
                 all=True)
 
@@ -169,11 +174,7 @@ class ConsumerViewSet(ReadOnlyProtectedModelViewSet):
 
         alias = self.request.query_params.get("alias", None)
         # Check if this is a valid regex. If not, we won't check regex
-        try:
-            re.compile(alias)
-            valid_regex = True
-        except (re.error, TypeError):
-            valid_regex = False
+        valid_regex = is_regex(alias)
         suffix = '__iregex' if valid_regex else '__istartswith'
         alias_prefix = '^' if valid_regex else ''
         queryset = queryset.prefetch_related('note')
diff --git a/apps/note/views.py b/apps/note/views.py
index a84e3636..7055ea12 100644
--- a/apps/note/views.py
+++ b/apps/note/views.py
@@ -13,6 +13,7 @@ from django.views.generic import CreateView, UpdateView, DetailView
 from django.urls import reverse_lazy
 from django_tables2 import SingleTableView
 from activity.models import Entry
+from api.viewsets import is_regex
 from permission.backends import PermissionBackend
 from permission.views import ProtectQuerysetMixin
 from note_kfet.inputs import AmountInput
@@ -89,11 +90,15 @@ class TransactionTemplateListView(ProtectQuerysetMixin, LoginRequiredMixin, Sing
         qs = super().get_queryset().distinct()
         if "search" in self.request.GET:
             pattern = self.request.GET["search"]
+
+            # Check if this is a valid regex. If not, we won't check regex
+            valid_regex = is_regex(pattern)
+            suffix = "__iregex" if valid_regex else "__icontains"
             qs = qs.filter(
-                Q(name__iregex=pattern)
-                | Q(destination__club__name__iregex=pattern)
-                | Q(category__name__iregex=pattern)
-                | Q(description__iregex=pattern)
+                Q(**{f"name{suffix}": pattern})
+                | Q(**{f"destination__club__name{suffix}": pattern})
+                | Q(**{f"category__name{suffix}": pattern})
+                | Q(**{f"description{suffix}": pattern})
             )
 
         qs = qs.order_by('-display', 'category__name', 'destination__club__name', 'name')
@@ -223,7 +228,10 @@ class TransactionSearchView(ProtectQuerysetMixin, LoginRequiredMixin, DetailView
         if "type" in data and data["type"]:
             transactions = transactions.filter(polymorphic_ctype__in=data["type"])
         if "reason" in data and data["reason"]:
-            transactions = transactions.filter(reason__iregex=data["reason"])
+            # Check if this is a valid regex. If not, we won't check regex
+            valid_regex = is_regex(data["reason"])
+            suffix = "__iregex" if valid_regex else "__istartswith"
+            transactions = transactions.filter(Q(**{f"reason{suffix}": data["reason"]}))
         if "valid" in data and data["valid"]:
             transactions = transactions.filter(valid=data["valid"])
         if "amount_gte" in data and data["amount_gte"]:
diff --git a/apps/permission/api/views.py b/apps/permission/api/views.py
index 1dd18899..39ff353c 100644
--- a/apps/permission/api/views.py
+++ b/apps/permission/api/views.py
@@ -2,7 +2,6 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 from django_filters.rest_framework import DjangoFilterBackend
-
 from api.filters import RegexSafeSearchFilter
 from api.viewsets import ReadOnlyProtectedModelViewSet
 
@@ -20,7 +19,7 @@ class PermissionViewSet(ReadOnlyProtectedModelViewSet):
     serializer_class = PermissionSerializer
     filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter]
     filterset_fields = ['model', 'type', 'query', 'mask', 'field', 'permanent', ]
-    search_fields = ['$model__name', '$query', '$description', ]
+    search_fields = ['$model__model', '$query', '$description', ]
 
 
 class RoleViewSet(ReadOnlyProtectedModelViewSet):
diff --git a/apps/registration/views.py b/apps/registration/views.py
index 3dd820d7..58299da2 100644
--- a/apps/registration/views.py
+++ b/apps/registration/views.py
@@ -16,6 +16,7 @@ from django.views import View
 from django.views.generic import CreateView, TemplateView, DetailView
 from django.views.generic.edit import FormMixin
 from django_tables2 import SingleTableView
+from api.viewsets import is_regex
 from member.forms import ProfileForm
 from member.models import Membership, Club
 from note.models import SpecialTransaction, Alias
@@ -192,11 +193,16 @@ class FutureUserListView(ProtectQuerysetMixin, LoginRequiredMixin, SingleTableVi
         if "search" in self.request.GET and self.request.GET["search"]:
             pattern = self.request.GET["search"]
 
+            # Check if this is a valid regex. If not, we won't check regex
+            valid_regex = is_regex(pattern)
+            suffix_username = "__iregex" if valid_regex else "__icontains"
+            suffix = "__iregex" if valid_regex else "__istartswith"
+            prefix = "^" if valid_regex else ""
             qs = qs.filter(
-                Q(first_name__iregex=pattern)
-                | Q(last_name__iregex=pattern)
-                | Q(profile__section__iregex=pattern)
-                | Q(username__iregex="^" + pattern)
+                Q(**{f"first_name{suffix}": pattern})
+                | Q(**{f"last_name{suffix}": pattern})
+                | Q(**{f"profile__section{suffix}": pattern})
+                | Q(**{f"username{suffix_username}": prefix + pattern})
             )
 
         return qs
diff --git a/apps/treasury/api/views.py b/apps/treasury/api/views.py
index 8cdb79d8..418bf220 100644
--- a/apps/treasury/api/views.py
+++ b/apps/treasury/api/views.py
@@ -2,7 +2,6 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 from django_filters.rest_framework import DjangoFilterBackend
-
 from api.filters import RegexSafeSearchFilter
 from api.viewsets import ReadProtectedModelViewSet
 
diff --git a/apps/treasury/views.py b/apps/treasury/views.py
index be989f99..64692793 100644
--- a/apps/treasury/views.py
+++ b/apps/treasury/views.py
@@ -20,6 +20,7 @@ from django.views.generic import UpdateView, DetailView
 from django.views.generic.base import View, TemplateView
 from django.views.generic.edit import BaseFormView, DeleteView
 from django_tables2 import SingleTableView
+from api.viewsets import is_regex
 from note.models import SpecialTransaction, NoteSpecial, Alias
 from note_kfet.settings.base import BASE_DIR
 from permission.backends import PermissionBackend
@@ -411,11 +412,16 @@ class SogeCreditListView(LoginRequiredMixin, ProtectQuerysetMixin, SingleTableVi
         if "search" in self.request.GET:
             pattern = self.request.GET["search"]
             if pattern:
+                # Check if this is a valid regex. If not, we won't check regex
+                valid_regex = is_regex(pattern)
+                suffix_alias = "__iregex" if valid_regex else "__icontains"
+                suffix = "__iregex" if valid_regex else "__istartswith"
+                prefix = "^" if valid_regex else ""
                 qs = qs.filter(
-                    Q(user__first_name__iregex=pattern)
-                    | Q(user__last_name__iregex=pattern)
-                    | Q(user__note__alias__name__iregex="^" + pattern)
-                    | Q(user__note__alias__normalized_name__iregex="^" + Alias.normalize(pattern))
+                    Q(**{f"user__first_name{suffix}": pattern})
+                    | Q(**{f"user__last_name{suffix}": pattern})
+                    | Q(**{f"user__note__alias__name{suffix_alias}": prefix + pattern})
+                    | Q(**{f"user__note__alias__normalized_name{suffix_alias}": prefix + Alias.normalize(pattern)})
                 )
 
         if "valid" not in self.request.GET or not self.request.GET["valid"]:
diff --git a/apps/wei/api/views.py b/apps/wei/api/views.py
index 88189d70..13f04a91 100644
--- a/apps/wei/api/views.py
+++ b/apps/wei/api/views.py
@@ -3,7 +3,6 @@
 
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.filters import OrderingFilter
-
 from api.filters import RegexSafeSearchFilter
 from api.viewsets import ReadProtectedModelViewSet
 
diff --git a/apps/wei/views.py b/apps/wei/views.py
index 4771cb5b..af0ce968 100644
--- a/apps/wei/views.py
+++ b/apps/wei/views.py
@@ -23,6 +23,7 @@ from django.views.generic import DetailView, UpdateView, RedirectView, TemplateV
 from django.utils.translation import gettext_lazy as _
 from django.views.generic.edit import BaseFormView, DeleteView
 from django_tables2 import SingleTableView
+from api.viewsets import is_regex
 from member.models import Membership, Club
 from note.models import Transaction, NoteClub, Alias, SpecialTransaction, NoteSpecial
 from note.tables import HistoryTable
@@ -219,13 +220,18 @@ class WEIMembershipsView(ProtectQuerysetMixin, LoginRequiredMixin, SingleTableVi
         if not pattern:
             return qs.none()
 
+        # Check if this is a valid regex. If not, we won't check regex
+        valid_regex = is_regex(pattern)
+        suffix_alias = "__iregex" if valid_regex else "__istartswith"
+        suffix = "__iregex" if valid_regex else "__icontains"
+        prefix = "^" if valid_regex else ""
         qs = qs.filter(
-            Q(user__first_name__iregex=pattern)
-            | Q(user__last_name__iregex=pattern)
-            | Q(user__note__alias__name__iregex="^" + pattern)
-            | Q(user__note__alias__normalized_name__iregex="^" + Alias.normalize(pattern))
-            | Q(bus__name__iregex=pattern)
-            | Q(team__name__iregex=pattern)
+            Q(**{f"user__first_name{suffix}": pattern})
+            | Q(**{f"user__last_name{suffix}": pattern})
+            | Q(**{f"user__note__alias__name{suffix_alias}": prefix + pattern})
+            | Q(**{f"user__note__alias__normalized_name{suffix_alias}": prefix + Alias.normalize(pattern)})
+            | Q(**{f"bus__name{suffix}": pattern})
+            | Q(**{f"team__name{suffix}": pattern})
         )
 
         return qs
@@ -255,11 +261,16 @@ class WEIRegistrationsView(ProtectQuerysetMixin, LoginRequiredMixin, SingleTable
         pattern = self.request.GET.get("search", "")
 
         if pattern:
+            # Check if this is a valid regex. If not, we won't check regex
+            valid_regex = is_regex(pattern)
+            suffix_alias = "__iregex" if valid_regex else "__istartswith"
+            suffix = "__iregex" if valid_regex else "__icontains"
+            prefix = "^" if valid_regex else ""
             qs = qs.filter(
-                Q(user__first_name__iregex=pattern)
-                | Q(user__last_name__iregex=pattern)
-                | Q(user__note__alias__name__iregex="^" + pattern)
-                | Q(user__note__alias__normalized_name__iregex="^" + Alias.normalize(pattern))
+                Q(**{f"user__first_name{suffix}": pattern})
+                | Q(**{f"user__last_name{suffix}": pattern})
+                | Q(**{f"user__note__alias__name{suffix_alias}": prefix + pattern})
+                | Q(**{f"user__note__alias__normalized_name{suffix_alias}": prefix + Alias.normalize(pattern)})
             )
 
         return qs