PHP Vulnerability Responses by Company

JUSTSYSTEMS CORPORATION

Companies / web services
Aliases / services
ジャストシステム / JustSystems / Just Systems / ホームページビルダー / ホームページ・ビルダー / Homepage Builder / JUSTSYSTEMS CORPORATION / 株式会社ジャストシステム / 株式会社ジャストシステム（JustSystems）
Official website
https://www.justsystems.com/
Sources identifying the operating company

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

Response status by service

Homepage Builder 23 (authoring software)

Response status
Not listed
Response information checked
2026-10-29

Current re-audit: Official sources searched; no response found · Research date: 2026-10-29

Windows website-authoring software. The checked product page does not specify a response to the current PHP vulnerabilities. Software compatibility does not establish remediation on the publishing server.

Scope: The PHP connection and response to the current PHP vulnerabilities are not listed. Incident or operational updates do not establish PHP remediation.

What users should do

Ask your hosting provider or server administrator about remediation for the PHP environment used by your site.

Official service URL

Source URLs

  1. Homepage Builder 23https://www.justsystems.com/jp/products/hpb/Service and operation documentation

Homepage Builder hosting service (10GB / 50GB)

Response status
Not listed
Response information checked
2026-10-29

Current re-audit: Related incident verified; PHP connection not stated · Research date: 2026-10-29

Temporary maintenance suspended control-panel use from October 28 at 15:00 and new contracts/options from October 24 at 15:30 (JST), with no end time stated. Existing websites, FTP and email are reported unaffected. No PHP connection is stated.

Scope: The PHP connection and response to the current PHP vulnerabilities are not listed. Incident or operational updates do not establish PHP remediation.

What users should do

Check the official operational notices for control-panel reopening. The October 23 restoration notice does not resolve the later suspension.

Official service URL

Source URLs

  1. Control-panel suspension, October 28https://jsboard.com/doc/hpbs/ja/obstacle/20261028141450.htmlService and operation documentation
  2. New applications suspended, notice dated October 26https://jsboard.com/doc/hpbs/ja/obstacle/20261026105401.htmlService and operation documentation
  3. Server-feature restoration, corrected noticehttps://jsboard.com/doc/hpbs/ja/obstacle/20261023182737.htmlService and operation documentation
Related official sources
  1. Company profileOfficial information directoryIdentifies the operating company.
  2. Homepage Builder 23Official information directoryOfficial authoring-software information, not evidence of PHP remediation.
  3. Control-panel suspension, October 28Official notice; link to this PHP incident unconfirmedConfirms plans, timing and operational scope.
  4. New applications suspended, notice dated October 26Official notice; link to this PHP incident unconfirmedReports suspension of new contracts and option applications since October 24.
  5. Server-feature restoration, corrected noticeOfficial notice; link to this PHP incident unconfirmedOctober 22 restoration history, distinct from the later control-panel suspension.

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