CVE-2025-27107Public exploitNetwork attack vector

Player-level server code execution via reflected exceptions

Published Mar 13, 2025 · Updated Mar 13, 2025

Sandbox escape in CyclopsMC IntegratedScripting allows remote authenticated users to execute arbitrary code on Minecraft servers. ScriptHelpers creates the GraalJS context with unrestricted host access, while a caught type-cast exception exposes a native Java object that scripts reflect through to arbitrary Java classes and methods. Any Minecraft player able to create and use an IntegratedScripting Variable Card can invoke Java methods such as Runtime.exec under the server process.

CVSS severityUnavailable
Unscored
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Sandbox escape in CyclopsMC IntegratedScripting allows remote authenticated users to execute arbitrary code on Minecraft servers. ScriptHelpers creates the GraalJS context with unrestricted host access, while a caught type-cast exception exposes a native Java object that scripts reflect through to arbitrary Java classes and methods. Any Minecraft player able to create and use an IntegratedScripting Variable Card can invoke Java methods such as Runtime.exec under the server process.

The record

CVE
CVE-2025-27107
Published
Mar 13, 2025
Updated
Mar 13, 2025
Vendor
CyclopsMC
Product
IntegratedScripting
Classifications
CWE-74, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.19.2-1.0.10
  2. Affected versionversion=< 1.20.1-1.0.13
  3. Affected versionversion=< 1.21.1-1.0.17
  4. Affected versionversion=< 1.21.4-1.0.9-254

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CyclopsMC · IntegratedScriptingversion=< 1.19.2-1.0.10; version=< 1.20.1-1.0.13; version=< 1.21.1-1.0.17; version=< 1.21.4-1.0.9-254

Published CVSS scores

8.6INCIBE-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo