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PHP Security Vulnerability Update

ResolvedminorOfficial source confirmedSpecific component onlySource start Oct 21, 2026, 07:04 PM · Resolved Oct 22, 2026, 08:26 AM

All sites are protected, the PHP security updates have been rolled out across the platform, and we have no evidence of any breaches related to this vulnerability.

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What visitors reported during this incident

No visitor reports were filed for this incident.

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Affected services

MyKinsta

Updates (8)

  1. Oct 22, 2026, 08:26 AM
    PHP Security Vulnerability Update

    All sites are protected, the PHP security updates have been rolled out across the platform, and we have no evidence of any breaches related to this vulnerability.

    Kinsta ↗
  2. Oct 22, 2026, 08:25 AM
    PHP Security Vulnerability Update

    The following PHP versions have patches that are rolling out across our infrastructure: 7.4, 8.0, 8.1, 8.2, 8.3, 8.4, 8.5 Our Cloudflare firewall mitigations and local configuration changes to block potential exploits of these vulnerabilities are remaining in place for all sites regardless of patch status until further notice.

    Kinsta ↗
  3. Oct 22, 2026, 01:31 AM
    PHP Security Vulnerability Update

    The following PHP versions have patches that are rolling out across our infrastructure: 7.4, 8.0, 8.1, 8.2, 8.3, 8.4, 8.5 Our Cloudflare firewall mitigations and local configuration changes to block potential exploits of these vulnerabilities are remaining in place for all sites regardless of patch status until further notice.

    Kinsta ↗
  4. Oct 21, 2026, 11:25 PM
    PHP Security Vulnerability Update

    The following PHP versions have patches that are rolling out across our infrastructure: 8.5, 8.3, 8.1, 8.0, 7.4, 8.2, and 8.4. Our Cloudflare firewall mitigations and local configuration changes to block potential exploits of these vulnerabilities are remaining in place for all sites regardless of patch status until further notice.

    Kinsta ↗
  5. Oct 21, 2026, 10:06 PM
    PHP Security Vulnerability Update

    The following PHP versions have patches that are rolling out across our infrastructure: 8.5, 8.3, 8.1, 8.0, and 7.4 The following PHP versions are still undergoing validation and will be rolled out once ready: 8.4 and 8.2 Our Cloudflare firewall mitigations and local configuration changes to block potential exploits of these vulnerabilities are remaining in place for all sites regardless of patch status until further notice.

    Kinsta ↗
  6. Oct 21, 2026, 09:17 PM
    PHP Security Vulnerability Update

    The following PHP versions have patches that are rolling out across our infrastructure: 8.5, 8.3, 8.0, and 7.4 The following PHP versions are still undergoing validation and will be rolled out once ready: 8.4, 8.2, and 8.1 Our Cloudflare firewall mitigations and local configuration changes to block potential exploits of these vulnerabilities are remaining in place for all sites regardless of patch status until further notice.

    Kinsta ↗
  7. Oct 21, 2026, 08:20 PM
    PHP Security Vulnerability Update

    The following PHP versions have patches that are rolling out across our infrastructure: 8.5, 8.3, and 8.0 The following PHP versions are still undergoing validation and will be rolled out once ready: 8.4, 8.2, 8.1, and 7.4 Our Cloudflare firewall mitigations and local configuration changes to block potential exploits of these vulnerabilities are remaining in place for all sites regardless of patch status until further notice.

    Kinsta ↗
  8. Oct 21, 2026, 07:04 PM
    PHP Security Vulnerability Update

    We're actively addressing the PHP security vulnerability announced by the PHP security team. As PHP is managed at the platform level on Kinsta, fixes will be deployed automatically once validated. We do want to clarify that the attacks are being successfully mitigated by our Cloudflare site protections, across all our sites, based on rules created specifically for these vulnerabilities. We continue to maintain multiple comprehensive levels of security to mitigate any potential attacks. The patched versions of PHP 8.3 and 8.5 have now been validated and are being rolled out across our platform. If your site is already using either version and you'd like to apply the patch immediately, you can switch to a lower PHP version and then back to your original version. Updates for PHP 8.4, 8.2, 8.1, and 7.4 are still undergoing validation and will be rolled out once ready. No action is required on your end. We'll provide further updates as the rollout progresses.

    Kinsta ↗

What to do next

  • Verify your own services recovered cleanly. Some upstream outages leave queues or caches in a degraded state, run smoke tests before declaring green internally.
  • Save the post-mortem. Vendors usually publish a detailed RCA 1-3 days later. We'll add it to this page when it appears.
  • Watch the provider going forward. Follow Kinsta's status feed →

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