Softaculous Virtualizor OS Command Injection via Billing Module Handler (CVE-2026-43641) | HOL Guard CVE

Critical · CVSS 9.3CVE-2026-43641

Softaculous Virtualizor OS Command Injection via Billing Module Handler

Answer in brief

CVE-2026-43641 records a Critical severity (CVSS 9.3) vulnerability in Softaculous Virtualizor OS Command Injection via Billing Module Handler. The current sources do not mark it as known exploited. The current feed maps Softaculous/Virtualizor (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 22, 2026Updated Sep 22, 2026Source checked Sep 22, 2026First seen by HOL Sep 22, 2026Material review Sep 22, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Softaculous/Virtualizor (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Softaculous/Virtualizorgeneric	>=0 <3.2.9 (Patch 9)	3.2.9 (Patch 9)

Recommended response

Check inventory. Check lockfiles and deployed manifests for Softaculous/Virtualizor.
Review the reported fix. Update Softaculous/Virtualizor to 3.2.9 (Patch 9) if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 22, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.