CVE-2026-86204

MEDIUM 6.5

PocketMine-MP before 5.39.2 Denial of Service via ModalFormResponsePacket

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-400
Vendor	pmmp
Product	pocketmine-mp
Published	Sep 9, 2026
Last Updated	Sep 9, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

pmmp / PocketMine-MP

0 < 5.39.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 Zwuiix-cmd dktapps