Dear NYhosters,
WHMCS 9.0.4 and WHMCS 8.13.3 are now (May 14th, 2026) available as important maintenance releases for the WHMCS 9.0 and 8.13 series. It addressed recent CVE vulnerabilities associated with WHMCS billing software. Please BACKUP everything in cPanel, backup data base separately, backup custom templates (footer, header etc.) then update WHMCS within admin interface.
Thank you!
NYhost 24/7 support