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OS Command InjectionWeakness · CWE-78

CVE-2026-56137

HIGH · 7.8 CVSS v3.0 Published 2026-06-30
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
81/100
Remediation priority · High
No privileges 7 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

RPG Maker MV and MZ contain an OS command injection vulnerability in their save-file parsing functionality. When a user loads a specially crafted save file, the application fails to properly sanitize input, allowing arbitrary OS commands to be executed on the host system.

MitigationDo not load save files from untrusted or unknown sources until an official vendor patch is available. If using RPG Maker to develop games, implement input validation and sanitization in custom save-file loading code to prevent command injection.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Confirm RPG Maker installation
    Check if RPG Maker MV or RPG Maker MZ is installed on your system by looking for the application in your program files or application directory
    Affected if Either RPG Maker MV or RPG Maker MZ is installed
  2. Identify the installed version
    Open RPG Maker and check the version number, typically found in the application title bar, help menu, or about dialog
    Affected if Version cannot be determined or is an older release of MV or MZ
  3. Verify save file loading capability
    Confirm that your RPG Maker project or game has functionality to load save files from external sources or user-provided files
    Affected if The application loads save files from any source other than the built-in trusted save mechanism
  4. Assess source of save files
    Review whether you or your users load save files from untrusted, unknown, or third-party sources
    Affected if Save files from untrusted or unknown sources are loaded into the application

You are affected if you have RPG Maker MV or MZ installed and load save files from sources that are not explicitly trusted, as the vulnerability is triggered when loading specially crafted save files.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Do not load save files from untrusted or unknown sources until an official vendor patch is available. If using RPG Maker to develop games, implement input validation and sanitization in custom save-file loading code to prevent command injection.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation6.0 h
  • Testing2.0 h
  • Review / QA1.0 h
11.0 hours of engineering $1,960
Get help mitigating

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-56137 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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