
General Information
WHMCS CVE-2026-29204: Hosting Billing Portal Patch Guide
Update WHMCS 8.13 LTS to 8.13.3 or WHMCS 9.0 to 9.0.4 for CVE-2026-29204, then verify billing, support, provisioning, and hosting modules.

Update WHMCS 8.13 LTS to 8.13.3 or WHMCS 9.0 to 9.0.4 for CVE-2026-29204, then verify billing, support, provisioning, and hosting modules.