Critical PHP security update affecting shared hosting

The critical PHP security update incident is resolved; no issues were seen after installing the PHP updates yesterday.

All remaining PHP servers patched and temporary mitigations rolled back; the environment is now being monitored for any issues.

cPanel servers updated and no longer degraded; mitigations continue for remaining shared hosting components.

MagicMail has recovered from degraded state; updates continue for remaining shared hosting components.

Patches and mitigations are being applied to all affected servers, with some shared service features disabled until the risk is mitigated.