diff --git a/pages/mitgliederbereich/mitglieder.vue b/pages/mitgliederbereich/mitglieder.vue
index bd600df..02ab171 100644
--- a/pages/mitgliederbereich/mitglieder.vue
+++ b/pages/mitgliederbereich/mitglieder.vue
@@ -115,7 +115,10 @@
                   </div>
                 </td>
                 <td class="px-4 py-3 whitespace-nowrap">
-                  <template v-if="canViewContactData">
+                  <template v-if="member.contactHidden">
+                    <span class="text-sm text-gray-400">Kontaktdaten nur für Vorstand sichtbar</span>
+                  </template>
+                  <template v-else>
                     <a
                       v-if="member.email"
                       :href="`mailto:${member.email}`"
@@ -123,18 +126,14 @@
                     >
                       {{ member.email }}
                     </a>
-                    <span
-                      v-else
-                      class="text-sm text-gray-400"
-                    >-</span>
+                    <span v-else class="text-sm text-gray-400">-</span>
                   </template>
-                  <span
-                    v-else
-                    class="text-sm text-gray-400"
-                  >Nur für Vorstand</span>
                 </td>
                 <td class="px-4 py-3 whitespace-nowrap">
-                  <template v-if="canViewContactData">
+                  <template v-if="member.contactHidden">
+                    <span class="text-sm text-gray-400">Kontaktdaten nur für Vorstand sichtbar</span>
+                  </template>
+                  <template v-else>
                     <a
                       v-if="member.phone"
                       :href="`tel:${member.phone}`"
@@ -142,15 +141,8 @@
                     >
                       {{ member.phone }}
                     </a>
-                    <span
-                      v-else
-                      class="text-sm text-gray-400"
-                    >-</span>
+                    <span v-else class="text-sm text-gray-400">-</span>
                   </template>
-                  <span
-                    v-else
-                    class="text-sm text-gray-400"
-                  >Nur für Vorstand</span>
                 </td>
                 <td class="px-4 py-3 whitespace-nowrap">
                   <button
@@ -296,44 +288,22 @@
               </div>
 
               <div class="grid sm:grid-cols-2 gap-3 text-gray-600">
-                <template v-if="canViewContactData">
-                  <div
-                    v-if="member.email"
-                    class="flex items-center"
-                  >
-                    <Mail
-                      :size="16"
-                      class="mr-2 text-primary-600"
-                    />
-                    <a
-                      :href="`mailto:${member.email}`"
-                      class="hover:text-primary-600"
-                    >{{ member.email }}</a>
-                  </div>
-                  <div
-                    v-if="member.phone"
-                    class="flex items-center"
-                  >
-                    <Phone
-                      :size="16"
-                      class="mr-2 text-primary-600"
-                    />
-                    <a
-                      :href="`tel:${member.phone}`"
-                      class="hover:text-primary-600"
-                    >{{ member.phone }}</a>
+                <template v-if="member.contactHidden">
+                  <div class="col-span-2 flex items-center text-gray-500 text-sm italic">
+                    <Mail :size="16" class="mr-2" />
+                    Kontaktdaten nur für Vorstand sichtbar
+                  </div>
+                </template>
+                <template v-else>
+                  <div v-if="member.email" class="flex items-center">
+                    <Mail :size="16" class="mr-2 text-primary-600" />
+                    <a :href="`mailto:${member.email}`" class="hover:text-primary-600">{{ member.email }}</a>
+                  </div>
+                  <div v-if="member.phone" class="flex items-center">
+                    <Phone :size="16" class="mr-2 text-primary-600" />
+                    <a :href="`tel:${member.phone}`" class="hover:text-primary-600">{{ member.phone }}</a>
                   </div>
                 </template>
-                <div
-                  v-else
-                  class="col-span-2 flex items-center text-gray-500 text-sm italic"
-                >
-                  <Mail
-                    :size="16"
-                    class="mr-2"
-                  />
-                  Kontaktdaten nur für Vorstand sichtbar
-                </div>
                 <div
                   v-if="member.address"
                   class="flex items-start col-span-2"
diff --git a/server/api/members.get.js b/server/api/members.get.js
index d1f43ec..d189ffc 100644
--- a/server/api/members.get.js
+++ b/server/api/members.get.js
@@ -22,7 +22,7 @@ export default defineEventHandler(async (event) => {
       })
     }
 
-    const currentUser = await getUserFromToken(token)
+  const currentUser = await getUserFromToken(token)
 
   // Get manual members and registered users
   const manualMembers = await readMembers()
@@ -150,8 +150,10 @@ export default defineEventHandler(async (event) => {
     mergedMembers.sort((a, b) => a.name.localeCompare(b.name))
     // Die Mitgliederliste ist nur für authentifizierte Nutzer sichtbar (siehe oben).
     // Respektiere individuelle Sichtbarkeitspräferenzen (user.visibility)
-    const currentUserToken = token
-    const isViewerAuthenticated = !!currentUser
+  const currentUserToken = token
+  const isViewerAuthenticated = !!currentUser
+  // Only 'vorstand' may override member visibility
+  const isPrivilegedViewer = currentUser ? hasRole(currentUser, 'vorstand') : false
 
     const sanitizedMembers = mergedMembers.map(member => {
       // Default: show email/phone/address to other logged-in members unless member.visibility explicitly hides them
@@ -161,7 +163,16 @@ export default defineEventHandler(async (event) => {
       const showPhone = visibility.showPhone === undefined ? true : Boolean(visibility.showPhone)
       const showAddress = visibility.showAddress === undefined ? false : Boolean(visibility.showAddress)
 
-      return {
+  // Determine if contact info existed but was hidden to the viewer
+  const hadEmail = !!member.email
+  const hadPhone = !!member.phone
+  const hadAddress = !!member.address
+  const emailVisible = (isPrivilegedViewer || (isViewerAuthenticated && showEmail))
+  const phoneVisible = (isPrivilegedViewer || (isViewerAuthenticated && showPhone))
+  const addressVisible = (isPrivilegedViewer || (isViewerAuthenticated && showAddress))
+  const contactHidden = (!emailVisible && hadEmail) || (!phoneVisible && hadPhone) || (!addressVisible && hadAddress)
+
+  return {
         id: member.id,
         name: member.name,
         source: member.source,
@@ -172,10 +183,12 @@ export default defineEventHandler(async (event) => {
         lastLogin: member.lastLogin,
         isMannschaftsspieler: member.isMannschaftsspieler,
         notes: member.notes || '',
-        // Only include contact fields when viewer is authenticated and the member allows it
-        email: (isViewerAuthenticated && showEmail) ? member.email : undefined,
-        phone: (isViewerAuthenticated && showPhone) ? member.phone : undefined,
-        address: (isViewerAuthenticated && showAddress) ? member.address : undefined
+  // Privileged viewers (vorstand) always see contact fields
+  email: emailVisible ? member.email : undefined,
+  phone: phoneVisible ? member.phone : undefined,
+  address: addressVisible ? member.address : undefined,
+  // Flag for UI: data existed but is hidden to the current viewer
+  contactHidden
       }
     })
 
diff --git a/server/api/profile.put.js b/server/api/profile.put.js
index d8e7cd2..74a4289 100644
--- a/server/api/profile.put.js
+++ b/server/api/profile.put.js
@@ -64,9 +64,10 @@ export default defineEventHandler(async (event) => {
     const visibility = body.visibility || body.visibilityPreferences || null
     if (visibility && typeof visibility === 'object') {
       user.visibility = user.visibility || {}
-      if (typeof visibility.showEmail === 'boolean') user.visibility.showEmail = visibility.showEmail
-      if (typeof visibility.showPhone === 'boolean') user.visibility.showPhone = visibility.showPhone
-      if (typeof visibility.showAddress === 'boolean') user.visibility.showAddress = visibility.showAddress
+      // Coerce values to booleans to be robust against string values from clients
+      if (visibility.showEmail !== undefined) user.visibility.showEmail = Boolean(visibility.showEmail)
+      if (visibility.showPhone !== undefined) user.visibility.showPhone = Boolean(visibility.showPhone)
+      if (visibility.showAddress !== undefined) user.visibility.showAddress = Boolean(visibility.showAddress)
     }
 
     // Handle password change