CVE-2026-43642 CRITICAL

CVE-2026-43642: Softaculous Virtualizor PHP Object Injection via Billing Module Handler

Vendor Softaculous
Product Virtualizor
Weakness CWE-502 · Unsafe deserialization
Published September 22, 2026
Last update September 25, 2026

CVSS base score

9.2/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 22, 2026 CVE published
September 25, 2026 Record updated

Related vulnerabilities

04Related CVE