---
id: CVE-2026-43642
title: >-
  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 deserializat…
summary: >-
  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 deserializat…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
vendor: Softaculous
product: Virtualizor
affected:
  - Virtualizor < 3.2.9 (Patch 9)
published: '2026-09-22'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T00:16:34.743'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-43642'
references:
  - url: >-
      https://www.virtualizor.com/blog/virtualizor-3-2-9-launched-release-candidate-patch-9/
    label: disclosure@vulncheck.com
  - url: 'https://www.virtualizor.com/blog/virtualizor-3-3-0/'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/softaculous-virtualizor-php-object-injection-via-billing-module-handler
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/blog/virtualizor-billing-hook-unauthenticated-root-rce
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-25T23:54:44.883732Z'
epss: 0.0096
epssPercentile: 0.5992
ingestedAt: '2026-09-22T18:08:12.473Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.