CVE-2026-43641: softaculous virtualizor OS Command Injection

Vulnerability summary

CVE-2026-43641 is a critical (CVSS 9.8) OS Command Injection vulnerability in softaculous virtualizor. EPSS estimates a 3.03% chance of exploitation in the next 30 days, higher than 87.3% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 22-09-2026
   PublishedVulnerability first disclosed.
2. 01-10-2026
   Last modifiedVulnerability information updated.

Description

Softaculous Virtualizor before 3.2.9 (Patch 9) and 3.0.0 contains an OS command injection vulnerability in the billing module handler that allows unauthenticated remote attackers to execute arbitrary commands as root by bypassing authentication through specific parameter combinations. Attackers can deserialize a crafted billing_data POST field and inject shell payloads through the uid field, which is passed unmodified to proc_open() via vexec(), yielding complete control of the host and all managed VPS instances.

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.