Vulnerability-Lookup

GHSA-F2CG-3CWW-MCQ8

Vulnerability from github – Published: 2026-04-17 12:31 – Updated: 2026-04-17 12:31

Details

GREENmod uses named pipes for communication between plugins, the web portal, and the system service, but the access control lists for these pipes are configured incorrectly. This allows an attacker to communicate with the stream and upload any XML or JSON file, which will be processed by the named pipe with the privileges of the user under whose context the service is running. This allows for Server-Side Request Forgery to any Windows system on which the agent is installed and which provides communication via SMB or WebDav.

This issue was fixed in version 2.8.33.

Severity

6.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-5131"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-17T11:16:11Z",
    "severity": "MODERATE"
  },
  "details": "GREENmod uses named pipes for communication between plugins, the web portal, and the system service, but the access control lists for these pipes are configured incorrectly. This allows an attacker to communicate with the stream and upload any XML or JSON file, which will be processed by the named pipe with the privileges of the user under whose context the service is running. This allows for Server-Side Request Forgery to\u00a0any Windows system\u00a0on which the agent is installed and which provides communication via SMB or WebDav.\n\nThis issue was fixed in version 2.8.33.",
  "id": "GHSA-f2cg-3cww-mcq8",
  "modified": "2026-04-17T12:31:25Z",
  "published": "2026-04-17T12:31:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5131"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/posts/2026/04/CVE-2026-5131"
    },
    {
      "type": "WEB",
      "url": "https://www.nomios.pl/greenmod"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L/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-2026-5131 (GCVE-0-2026-5131)

Vulnerability from cvelistv5 – Published: 2026-04-17 10:45 – Updated: 2026-04-17 11:45

Title

Server-Side Request Forgery in GREENmod

Summary

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-17 11:44 UTC

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

CERT-PL ENISA root Scorecard

References

2 references

URL	Tags
https://www.nomios.pl/greenmod/	product
https://cert.pl/posts/2026/04/CVE-2026-5131	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Nomios Poland	GREENmod	Affected: 0 , < 2.8.33 (semver)

Date Public

2026-04-17 12:24

Credits

Marcin Ressel

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-5131",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-17T11:44:55.994641Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-17T11:45:23.719Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "GREENmod",
          "vendor": "Nomios Poland",
          "versions": [
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            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Marcin Ressel"
        }
      ],
      "datePublic": "2026-04-17T12:24:00.000Z",
      "descriptions": [
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          "descriptions": [
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            "Recovery": "NOT_DEFINED",
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            "vulnAvailabilityImpact": "NONE",
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      "providerMetadata": {
        "dateUpdated": "2026-04-17T10:45:34.021Z",
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      },
      "references": [
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          "tags": [
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          ],
          "url": "https://www.nomios.pl/greenmod/"
        },
        {
          "tags": [
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          ],
          "url": "https://cert.pl/posts/2026/04/CVE-2026-5131"
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      "source": {
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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-F2CG-3CWW-MCQ8

CVE-2026-5131 (GCVE-0-2026-5131)

Tags

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Nomenclature

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