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Public proof of concept

CVE-2026-43641

A public proof of concept exists; no exploitation attested.

  • Published2026-09-22
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-09-2218:17CVE publishedNVD

Versions per branch

Products declared by the CNA

As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Softaculous Virtualizorother versions: not affected
    Affected
    • < 3.2.9 (Patch 9)fixed in 3.2.9 (Patch 9)custom

    Not affected = 3.0.0

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-01

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-43641 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2026-09-23
  • CNACVSS 4.09.3known since 2026-10-23
  • CNACVSS 3.19.8known since 2026-10-23
  • CNAweakness (CWE)CWE-78known since 2026-10-23
  • FIRST EPSSEPSS score3.0 %2026-11-06
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2026-09-22
Last Modified
2026-09-23
NVD status
Deferred
GitHub Advisory
GHSA-x23m-fhhv-vj5x

Frequently asked questions

What is CVE-2026-43641?

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.

Is CVE-2026-43641 actively exploited?

A proof-of-concept exploit exists for CVE-2026-43641, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-43641?

CVE-2026-43641 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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