The Mathematics Certification Institute of Japan

Japan-based services

Aliases / services: 公益財団法人日本数学検定協会 / 数学検定 / 算数検定 / 数学甲子園 / The Mathematics Certification Institute of Japan
Official website: https://www.su-gaku.net/

Each response applies only to its stated service scope. “Not listed” does not mean unpatched or unaffected.

Response status by service

Listed services and systems

Response status: Static pages restored; some functions suspended
Response information checked: 2026-10-27 Rechecked: 2026-10-27

A foundation administering mathematics proficiency tests.

On 23 October at 13:00, the website reopened as static HTML with PHP disabled. Some forms, search, news from 2021 and earlier and Math Koshien applications remain suspended. Test applications, results and group accounts remain available.

What users should do

For unavailable procedures, call 03-5812-8340 on weekdays, 10:00–16:00 JST.

Official service URL

https://www.su-gaku.net/

Source URLs

PHP vulnerability responsehttps://www.su-gaku.net/information/20261023-23399/Response evidence

Related official sources

PHP vulnerability responseOfficial notice