diff --git a/packages/hydrooj/src/handler/problem.ts b/packages/hydrooj/src/handler/problem.ts
index c7ee4bb66..2a266849c 100644
--- a/packages/hydrooj/src/handler/problem.ts
+++ b/packages/hydrooj/src/handler/problem.ts
@@ -391,7 +391,9 @@ export class ProblemDetailHandler extends ContestDetailBaseHandler {
             [this.response.body.ctdocs, this.response.body.htdocs] = (await Promise.all([
                 contest.getRelated(this.args.domainId, this.pdoc.docId),
                 contest.getRelated(this.args.domainId, this.pdoc.docId, 'homework'),
-            ])).map((tdocs) => tdocs.filter((tdoc) => !tdoc.assign?.length || Set.intersection(tdoc.assign, this.user.group).size));
+            ])).map((tdocs) => tdocs.filter((tdoc) =>
+                this.user.hasPerm(PERM.PERM_VIEW_HIDDEN_CONTEST) || !tdoc.assign?.length || Set.intersection(tdoc.assign, this.user.group).size,
+            ));
         }
     }