diff --git a/CHANGELOG.md b/CHANGELOG.md
index bf354c789..58926a7dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ and this project adheres to
 
 ### Fixed
 
+- 🐛(frontend) prevent the share modal from crashing on team-based accesses
 - 🐛(frontend) keep uploaded items usable while malware analysis runs
 - 🐛(backend) stream export files from S3 without buffering
 
diff --git a/src/frontend/apps/drive/src/features/explorer/components/modals/share/ItemShareModal.tsx b/src/frontend/apps/drive/src/features/explorer/components/modals/share/ItemShareModal.tsx
index f0597d325..50097a66c 100644
--- a/src/frontend/apps/drive/src/features/explorer/components/modals/share/ItemShareModal.tsx
+++ b/src/frontend/apps/drive/src/features/explorer/components/modals/share/ItemShareModal.tsx
@@ -147,6 +147,13 @@ export const ItemShareModal = ({
     const accessesByUserId = new Map<string, Access>();
 
     data.forEach((access) => {
+      // Team-based accesses (access.team set, user null) grant a whole team, not a
+      // single user. This member list is keyed by user id and renders per-user
+      // rows, so skip them — otherwise `access.user.id` null-derefs and the whole
+      // modal crashes (a client-side exception).
+      if (access.team) {
+        return;
+      }
       const existing = accessesByUserId.get(access.user.id);
 
       if (!existing) {