Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://www.virtualizor.com/blog/virtualizor-3-2-9-launched-release-candidate-pa
- https://www.virtualizor.com/blog/virtualizor-3-3-0/
- https://www.vulncheck.com/advisories/softaculous-virtualizor-php-object-injectio
- https://www.vulncheck.com/blog/virtualizor-billing-hook-unauthenticated-root-rce
FAQ
What is CVE-2026-43642?
CVE-2026-43642 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 se...
How severe is CVE-2026-43642?
CVE-2026-43642 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43642?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.