CVE-2026-43642
Softaculous Virtualizor PHP Object Injection via Billing Module Handler
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-502 |
| Vendor | softaculous |
| Product | virtualizor |
| Published | Sep 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Softaculous / Virtualizor
0 < 3.2.9 (Patch 9)
References
vulncheck.com: https://www.vulncheck.com/blog/virtualizor-billing-hook-unauthenticated-root-rce virtualizor.com: https://www.virtualizor.com/blog/virtualizor-3-2-9-launched-release-candidate-patch-9/ virtualizor.com: https://www.virtualizor.com/blog/virtualizor-3-3-0/ vulncheck.com: https://www.vulncheck.com/advisories/softaculous-virtualizor-php-object-injection-via-billing-module-handler
Credits
Valentin Lobstein (Chocapikk) VulnCheck