KnownHost, LLC

Global hosting

Aliases / services: KnownHost / knownhost.com / KnownHost, LLC
Official website: https://knownhost.com/

Sources identifying the operating company

https://www.knownhost.com/terms-of-service

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

Response status by service

Shared / Managed cPanel / DirectAdmin / Plesk

Response status: Patch rollout in progress
Response information checked: 2026-10-27

Current re-audit: Official response verified · Research date: 2026-10-27

Fixes were applied to shared, managed cPanel and Plesk servers. DirectAdmin rollout continues; the provider does not guarantee every server completed.

Scope: For cPanel PHP 7.3 or older, verify patched builds through CloudLinux or Imunify360; a license alone does not prove installation.

What users should do

Ask support to verify the installed package using the server name and PHP branch. For old PHP, check upgrade options or existing extended support.

Official service URL

https://knownhost.com/

Source URLs

KnownHost: PHP vulnerability responsehttps://www.knownhost.com/blog/how-we-patched-php-across-knownhosts-managed-infrastructure/Response evidence

Related official sources

KnownHost: PHP vulnerability responseOfficial noticeOfficial incident notice reviewed.