Outage in One.com
PHP vulnerability
Resolved MinorIncident Report
Summary AI Generated
Two critical PHP security vulnerabilities were identified, prompting One.com to implement temporary countermeasures that caused disruptions to website uploads, direct database access (phpMyAdmin), and CalDAV calendar synchronization. All supported PHP versions (8.2–8.5) and older versions were patched and rolled out across systems, with affected services restored during the process. The incident was resolved after approximately 18 hours, with all countermeasures rolled back and full monitoring confirmed.
We are aware of two recently discovered security vulnerabilities in PHP, a technology used by many websites.
These vulnerabilities could potentially be exploited by attackers, which is why they are being treated as a high priority across the industry.
Our technical teams are already preparing to implement the necessary security updates as soon as they become available.
We are actively monitoring the situation and will share further updates through here.
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Latest Updates ( sorted recent to last )
RESOLVED
11 days ago - at 10/22/2026 05:20AM
We have now updated all available PHP versions, and all temporary countermeasures implemented during the event have been rolled back.
We consider the incident resolved. However, we will continue to closely monitor the situation to ensure ongoing stability.
MONITORING
12 days ago - at 10/21/2026 04:44PM
Progress is being made, and CalDAV and phpMyAdmin are back online again
We are actively monitoring the situation and will share further updates through here.
IDENTIFIED
12 days ago - at 10/21/2026 02:52PM
All currently supported PHP version have now been patched.
Thats PHP 8.2, 8.3 8.4 & 8.5
Older version are still being worked on. We will keep you updated when this is done
IDENTIFIED
12 days ago - at 10/21/2026 02:41PM
The PHP security update is available and is currently being rolled out to our systems. Our technical teams are working on the rollout with full dedication. As soon as it is completed, we will inform you via this status page.
IDENTIFIED
12 days ago - at 10/21/2026 01:42PM
As we implement countermeasures to prevent malicious activity, some services may be temporarily disrupted. This includes uploads to websites, direct database access and calendar synchronization with third-party email applications.
We are sorry for the inconvenience.
INVESTIGATING
12 days ago - at 10/21/2026 10:55AM
We are aware of two recently discovered security vulnerabilities in PHP, a technology used by many websites.
These vulnerabilities could potentially be exploited by attackers, which is why they are being treated as a high priority across the industry.
Our technical teams are already preparing to implement the necessary security updates as soon as they become available.
We are actively monitoring the situation and will share further updates through here.
Latest One.com outages
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