Impact of the PHP Vulnerability on Our Services
Thank you for always using YOLO JAPAN’s services.
On October 21, 2026 (Japan time), a serious vulnerability (a security weakness) was announced in PHP, a programming language widely used by web services. We have investigated the impact on the services we provide.
■ YOLO WORK, YOLO HOME, YOLO SURVEY, etc.
These services do not use PHP and are not affected.
■ YOLO DISCOVER
Part of the YOLO DISCOVER system uses PHP and was running on an affected version. Following the announcement, we took action and completed the update to a fixed version at 6:17 a.m. on October 22 (Japan time).
At this time, no damage such as unauthorized access or leakage of personal information exploiting this vulnerability has been confirmed.
■ To our users
There is nothing you need to do regarding this matter (such as changing your password).
We look forward to your continued use of YOLO JAPAN’s services.







