Vulnerability-Lookup

JVNDB-2026-000093

Vulnerability from jvndb - Published: 2026-06-30 18:07 - Updated:2026-06-30 18:07

Severity

7.8 (High) - cvssV3_0 - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Summary

RPG MAKER MV and MZ vulnerable to OS command injection

Details

RPG MAKER MV and MZ provided by Gotcha Gotcha Games Inc. are game development tools, which provide "save data" facility to create a file to preserve game status and related parameters. A user can save the current game status to a save-file, and later load the file to resume playing the game. When loading a save-file, RPG MAKER MV and MZ fail to properly treat crafted contents, and may lead to OS command injection.

OS Command Injection (CWE-78) - CVE-2026-56137

Shuta Ide of GMO Flatt Security Inc. reported this vulnerability to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

References

Type

URL

	JVN	https://jvn.jp/en/jp/JVN69681784/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-56137
	OS Command Injection(CWE-78)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

	Gotcha Gotcha Games Inc.	RPG Maker MV
	Gotcha Gotcha Games Inc.	RPG Maker MZ

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000093.html",
  "dc:date": "2026-06-30T18:07+09:00",
  "dcterms:issued": "2026-06-30T18:07+09:00",
  "dcterms:modified": "2026-06-30T18:07+09:00",
  "description": "RPG MAKER MV and MZ provided by Gotcha Gotcha Games Inc. are game development tools, which provide \"save data\" facility to create a file to preserve game status and related parameters. A user can save the current game status to a save-file, and later load the file to resume playing the game.\r\nWhen loading a save-file, RPG MAKER MV and MZ fail to properly treat crafted contents, and may lead to OS command injection.\u003ca href=\u0027https://cwe.mitre.org/data/definitions/78.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003cul\u003e\u003cli\u003eOS Command Injection (CWE-78) - CVE-2026-56137\u003c/li\u003e\u003c/ul\u003eShuta Ide of GMO Flatt Security Inc. reported this vulnerability to IPA.\r\nJPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000093.html",
  "sec:cpe": [
    {
      "#text": "cpe:/a:misc:gotcha_gotcha_games_rpg_maker_mv",
      "@product": "RPG Maker MV",
      "@vendor": "Gotcha Gotcha Games Inc.",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/a:misc:gotcha_gotcha_games_rpg_maker_mz",
      "@product": "RPG Maker MZ",
      "@vendor": "Gotcha Gotcha Games Inc.",
      "@version": "2.2"
    }
  ],
  "sec:cvss": {
    "@score": "7.8",
    "@severity": "High",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-000093",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN69681784/index.html",
      "@id": "JVN#69681784",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-56137",
      "@id": "CVE-2026-56137",
      "@source": "CVE"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-78",
      "@title": "OS Command Injection(CWE-78)"
    }
  ],
  "title": "RPG MAKER MV and MZ vulnerable to OS command injection"
}

CVE-2026-56137 (GCVE-0-2026-56137)

Vulnerability from cvelistv5 – Published: 2026-06-30 06:02 – Updated: 2026-06-30 12:53

Summary

RPG MAKER MV and MZ provided by Gotcha Gotcha Games Inc. contain an OS command injection vulnerability. If a user loads a specially crafted save-file, arbitrary OS command may be executed.

Severity

7.8 (High)


                        
                          CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

8.4 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-78 - Improper neutralization of special elements used in an OS command ('OS Command Injection')

Assigner

jpcert

References

3 references

URL	Tags
https://rpgmakerofficial.com/en/news/4188/
https://rpgmakerofficial.com/news/4183/
https://jvn.jp/en/jp/JVN69681784/

Impacted products

2 products

Vendor	Product	Version
Gotcha Gotcha Games Inc.	RPG MAKER MV	Affected: 1.6.3 and earlier
Gotcha Gotcha Games Inc.	RPG MAKER MZ	Affected: 1.10.0 and earlier

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-56137",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-30T12:53:07.509137Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-30T12:53:15.013Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "RPG MAKER MV",
          "vendor": "Gotcha Gotcha Games Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "1.6.3 and earlier"
            }
          ]
        },
        {
          "product": "RPG MAKER MZ",
          "vendor": "Gotcha Gotcha Games Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "1.10.0 and earlier"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "RPG MAKER MV and MZ provided by Gotcha Gotcha Games Inc. contain an OS command injection vulnerability. If a user loads a specially crafted save-file, arbitrary OS command may be executed."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "Improper neutralization of special elements used in an OS command (\u0027OS Command Injection\u0027)",
              "lang": "en-US",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-30T06:02:47.607Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "url": "https://rpgmakerofficial.com/en/news/4188/"
        },
        {
          "url": "https://rpgmakerofficial.com/news/4183/"
        },
        {
          "url": "https://jvn.jp/en/jp/JVN69681784/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2026-56137",
    "datePublished": "2026-06-30T06:02:47.607Z",
    "dateReserved": "2026-06-19T05:52:27.686Z",
    "dateUpdated": "2026-06-30T12:53:15.013Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

JVNDB-2026-000093

CVE-2026-56137 (GCVE-0-2026-56137)

Tags

Sightings

Nomenclature