CVE-2026-43642

Softaculous Virtualizor before 3.2.9 (Patch 9) and 3.0.0 contains a PHP object injection vulnerability in the billing module handler that allows unauthenticated remote attackers to supply arbitrary serialized PHP objects for deserialization by setting the act parameter to login with the from_billing_module parameter present. Attackers can pass malicious serialized data through the billing_data POST field to the unserialize() function without allowed_classes restrictions, enabling exploitation of available POP chains to achieve remote code execution as root.

• Published Sep 22, 2026
• CVSS 9.2 critical
• 1.0% chance of exploitation in the next 30 days (EPSS)
• A fix is available

CVE-2026-43642 at the National Vulnerability Database