Намедни собрался поискать задачи в архиве, но столкнулся с багом(фичей). При поиске "ready" мне выдает задачу розетки. Что пошло не так? 
| № | Пользователь | Рейтинг |
|---|---|---|
| 1 | jiangly | 3810 |
| 2 | Benq | 3676 |
| 3 | Kevin114514 | 3655 |
| 4 | maroonrk | 3463 |
| 5 | strapple | 3447 |
| 6 | Um_nik | 3387 |
| 7 | heuristica | 3322 |
| 8 | turmax | 3317 |
| 9 | tourist | 3307 |
| 10 | jiangbowen | 3291 |
| Страны | Города | Организации | Всё → |
| № | Пользователь | Вклад |
|---|---|---|
| 1 | Qingyu | 156 |
| 2 | nik_exists | 150 |
| 2 | maspy | 150 |
| 4 | Um_nik | 141 |
| 5 | Errichto | 139 |
| 6 | adamant | 137 |
| 7 | AmShZ | 135 |
| 8 | BledDest | 132 |
| 9 | maroonrk | 131 |
| 10 | qwexd | 129 |
| Название |
|---|



Further investigation: depending on the selected archive task page, different tasks are shown. But still not related to the
readytheme.Auto comment: topic has been translated by KhB (original revision, translated revision, compare)
The same for word "class":
Auto comment: topic has been updated by KhB (previous revision, new revision, compare).
Автокомментарий: текст был обновлен пользователем KhB (предыдущая версия, новая версия, сравнить).
Try this payload on handle search:
<script\x20type="text/javascript">javascript:alert(1); ,
it should give "no such user" while it gives an error page. Might be vulnerable, I am not a tester. I was afraid to ask this in a post seeing a lot of downvotes in one of my posts.
Also words "remove", "click", "response", "function", "alert", "type", "toggle" and "codeforces" gives same result. Even parts of the link "sta.codeforces.com/s/" works in the same way.
It is really strange, that it works only on problemset page and gives only the first problem.