Vulnerability · Published Sep 22, 2026 · Assigned by VulnCheck
CVE-2026-43642Softaculous Virtualizor PHP Object Injection via Billing Module Handler
High 8.1
In plain English
A high-severity unsafe deserialization in Virtualizor from Softaculous. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Softaculous | Virtualizor | 0 – before 3.2.9 (Patch 9) |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- VulnCheck Blog technical-description, exploit
- 3.2.9 Patch 9 Release Notes release-notes, patch
- 3.3.0 Release Notes release-notes, patch
- https://www.vulncheck.com/advisories/softaculous-virtualizor-php-object-injection-via-billing-module-handler third-party-advisory