diff --git a/keyserver/src/cron/cron.js b/keyserver/src/cron/cron.js
--- a/keyserver/src/cron/cron.js
+++ b/keyserver/src/cron/cron.js
@@ -13,6 +13,7 @@
 import { deleteExpiredCookies } from '../deleters/cookie-deleters.js';
 import { deleteOrphanedDays } from '../deleters/day-deleters.js';
 import { deleteOrphanedEntries } from '../deleters/entry-deleters.js';
+import { deleteOrphanedInviteLinks } from '../deleters/link-deleters.js';
 import { deleteOrphanedMemberships } from '../deleters/membership-deleters.js';
 import { deleteOrphanedMessages } from '../deleters/message-deleters.js';
 import { deleteOrphanedNotifs } from '../deleters/notif-deleters.js';
@@ -72,6 +73,7 @@
           await deleteExpiredUpdates();
           await deleteUnassignedUploads();
           await deleteStaleSIWENonceEntries();
+          await deleteOrphanedInviteLinks();
         } catch (e) {
           console.warn('encountered error while trying to clean database', e);
         }
diff --git a/keyserver/src/deleters/link-deleters.js b/keyserver/src/deleters/link-deleters.js
--- a/keyserver/src/deleters/link-deleters.js
+++ b/keyserver/src/deleters/link-deleters.js
@@ -68,4 +68,20 @@
   await deleteInviteLinks([result]);
 }
 
-export { deleteInviteLink };
+async function deleteOrphanedInviteLinks(): Promise<void> {
+  const [selectResults] = await dbQuery(SQL`
+    SELECT i.id, i.name, i.blob_holder AS blobHolder
+    FROM invite_links i
+    LEFT JOIN threads tc ON tc.id = i.community
+    LEFT JOIN threads tt ON tt.id = i.thread
+    WHERE tc.id IS NULL OR (i.thread IS NOT NULL AND tt.id IS NULL)
+  `);
+  const inviteLinksToDelete = selectResults.map(({ id, name, blobHolder }) => ({
+    id,
+    name,
+    blobHolder,
+  }));
+  await deleteInviteLinks(inviteLinksToDelete);
+}
+
+export { deleteInviteLink, deleteOrphanedInviteLinks };