CVE-2026-86204

PocketMine-MP versions before 5.39.2 fail to limit JSON payload size in ModalFormResponsePacket handling, allowing authenticated players to cause denial of service. Attackers can send modal form response packets with massive JSON arrays to exhaust server memory and CPU resources, rendering the server unresponsive.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-788v-5pfp-93ff
https://www.vulncheck.com/advisories/pocketmine-mp-before-5.39.2-denial-of-service-via-modalformresponsepacket
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-788v-5pfp-93ff

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-09 14:17

Updated : 2026-09-09 20:20

NVD link : CVE-2026-86204

Mitre link : CVE-2026-86204

CVE.ORG link : CVE-2026-86204

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

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