Vulnerability-Lookup

GHSA-X23M-FHHV-VJ5X

Vulnerability from github – Published: 2026-09-22 18:33 – Updated: 2026-09-22 18:33

Details

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.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                  
                    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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43641"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-22T18:17:14Z",
    "severity": "CRITICAL"
  },
  "details": "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.",
  "id": "GHSA-x23m-fhhv-vj5x",
  "modified": "2026-09-22T18:33:32Z",
  "published": "2026-09-22T18:33:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43641"
    },
    {
      "type": "WEB",
      "url": "https://www.virtualizor.com/blog/virtualizor-3-2-9-launched-release-candidate-patch-9"
    },
    {
      "type": "WEB",
      "url": "https://www.virtualizor.com/blog/virtualizor-3-3-0"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/softaculous-virtualizor-os-command-injection-via-billing-module-handler"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/blog/virtualizor-billing-hook-unauthenticated-root-rce"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-43641 (GCVE-0-2026-43641)

Vulnerability from cvelistv5 – Published: 2026-09-22 17:51 – Updated: 2026-09-23 15:40

Title

Softaculous Virtualizor OS Command Injection via Billing Module Handler

Summary

Severity

9.3 (Critical)


                        
                          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

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-23 15:40 UTC

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://www.vulncheck.com/blog/virtualizor-billin…	technical-descriptionexploit
https://www.virtualizor.com/blog/virtualizor-3-2-…	release-notespatch
https://www.virtualizor.com/blog/virtualizor-3-3-0/	release-notespatch
https://www.vulncheck.com/advisories/softaculous-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Softaculous	Virtualizor	Affected: 0 , < 3.2.9 (Patch 9) (custom) Unaffected: 3.0.0 (semver)

Date Public

2026-09-01 00:00

Credits

Valentin Lobstein (Chocapikk) VulnCheck

Show details on NVD website

JSON

To clipboard

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  "containers": {
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                "id": "CVE-2026-43641",
                "options": [
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                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-23T15:40:21.208506Z",
                "version": "2.0.3"
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    "cna": {
      "affected": [
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          "product": "Virtualizor",
          "vendor": "Softaculous",
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              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
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          "name": "3.2.9 Patch 9 Release Notes",
          "tags": [
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    "datePublished": "2026-09-22T17:51:13.064Z",
    "dateReserved": "2026-05-01T18:22:45.642Z",
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-X23M-FHHV-VJ5X

CVE-2026-43641 (GCVE-0-2026-43641)

Tags

Sightings

Nomenclature

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