PHP Vulnerability Responses by Company

NetAdvance

Japan-based services
Aliases / services
ネットアドバンス / 株式会社ネットアドバンス / NetAdvance Inc. / ジャパンナレッジ / JapanKnowledge / ジャパンナレッジPersonal / JKBooks / NetAdvance
Official website
https://japanknowledge.com/

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
Personal verified and reopened
Response information checked
2026-10-27 Rechecked: 2026-10-27

Online publisher backed by Shogakukan and operator of JapanKnowledge. This reopening notice covers Personal.

A security patch for the PHP version used by JapanKnowledge Personal was verified without problems. The service reopened around 18:15 on October 22.

What users should do

Use Personal normally; consult JapanKnowledge's FAQ or support if access fails.

Official service URL

Source URLs

  1. PHP2Shell response and scopehttps://japanknowledge.com/whatsnew/w.html?id=12516Response evidence
  2. Operating entityhttps://japanknowledge.com/company/corporate/Service and operation documentation
Related official sources
  1. PHP2Shell response and scopeOfficial notice
  2. Operating entityOfficial information directory

Comments