Version 8.13.7 (Maintenance Release)
Maintenance

    WHMCS-27923 — Security Fix for CVE-2026-67399

Modules

    WHMCS-27908 — Security Fix for CVE-2026-67398
	
Version 8.13.6 (Maintenance Release)
Implemented

    WHMCS-26198 — IP allow list for cron task invocation via HTTP request

Maintenance

    WHMCS-25637 — Improved security around email previews
    WHMCS-26193 — Undisclosed Security Fix
    WHMCS-26284 — Add System Health Check notice if deprecated modules are found
    WHMCS-26382 — Undisclosed Security Fix
    WHMCS-26464 — Block direct access to email campaign and hidden Knowledgebase image attachments
    WHMCS-26502 — Undisclosed Security Fix
    WHMCS-27325 — Improve handling of invalid data during null-IV migration

Modules

    WHMCS-26360 — Undisclosed Security Fix
    WHMCS-26381 — Improved security for paying invoices with PayPal Payments
    WHMCS-26480 — Remove Hipchat Notification Module
    WHMCS-27149 — Undisclosed Security Fix
    WHMCS-27204 — Improved payment capture logic in Admin Area for Stripe Dynamic Payment Gateway
	
Version 8.13.5 (Maintenance Release)
Maintenance

    WHMCS-26068 — Undisclosed Security Fix
    WHMCS-26192 — Improved security around Admin password resets.
    WHMCS-26194 — Improved security around User password resets.
    WHMCS-26206 — Improved security around Invoice processing Hook Points
    WHMCS-26338 — Improved security around User logouts.
    WHMCS-26339 — Admins require “View Clients Summary” permission to download client files
    WHMCS-26425 — Undisclosed Security Fix
    WHMCS-26466 — Persist Sign-In Integration notice when appropriate
    WHMCS-26624 — Undisclosed Security Fix

Modules

    WHMCS-24791 — Improved security for paying invoices with Stripe
    WHMCS-26067 — Improved security for paying invoices with PayPal Basic
    WHMCS-26381 — Improved security for paying invoices with PayPal Payments
    WHMCS-26444 — Improved security of logging in WorldPay FuturePay
    WHMCS-26566 — Corrected variable name for Enom
	
Version 8.13.4 (Maintenance Release)
Maintenance

    WHMCS-25235 — Undisclosed Security Fix
    WHMCS-25253 — Undisclosed Security Fix
    WHMCS-25271 — Add validation Improvements in Admin Area
    WHMCS-25272 — Undisclosed Security Fix
    WHMCS-26073 — Improved encryption method for sensitive data storage
    WHMCS-26075 — Increased randomness of guest ticket access key generation
    WHMCS-26189 — Undisclosed Security Fix

Modules

    WHMCS-26056 — Undisclosed Security Fix
    WHMCS-26058 — Undisclosed Security Fix
    WHMCS-26060 — Undisclosed Security Fix
    WHMCS-26061 — Undisclosed Security Fix
    WHMCS-26063 — Undisclosed Security Fix
    WHMCS-26066 — Undisclosed Security Fix
    WHMCS-26072 — Undisclosed Security Fix
    WHMCS-26074 — Undisclosed Security Fix
    WHMCS-26079 — Undisclosed Security Fix
    WHMCS-26145 — Remove Asiapay, Gate2shop, Inpay & Paypoint from distribution
    WHMCS-26261 — Improve security around Reports
	
Version 8.13.3 (Maintenance)
Maintenance

    WHMCS-26041 - Security Fix for CVE-2026-2920