Vulnerability · Published Sep 22, 2026 · Assigned by VulnCheck

CVE-2026-43641Softaculous Virtualizor OS Command Injection via Billing Module Handler

Critical 9.8

In plain English

A critical-severity OS command injection in Virtualizor from Softaculous. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.0% (higher than 88% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)3.0%top 12.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Softaculous	Virtualizor	0 – before 3.2.9 (Patch 9)

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/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-os-command-injection-via-billing-module-handler third-party-advisory