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CVE-2026-86202— PocketMine-MP before 5.39.2 Network Amplification via ActorEventPacket

Quick assessment

Affected

pmmp PocketMine-MP

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PMMP PocketMine-MP是PMMP团队开源的一款基岩版游戏服务器软件。 PMMP PocketMine-MP 5.39.2之前版本存在资源管理错误漏洞，该漏洞源于ActorEventPacket处理存在网络放大问题，攻击者可发送特制的ActorEventPacket消息向其他客户端发送大量动画事件，消耗服务器CPU和内存资源。

CVSS 4.3 · Medium EPSS 0.35% · P28 Updated Oct 08, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

Vendor	Product	Version Range	Status
pmmp	PocketMine-MP	`< 5.39.2`	affected
		`5.39.2`	unaffected

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I. Basic Information for CVE-2026-86202

Vulnerability Information

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Vulnerability Title

PocketMine-MP before 5.39.2 Network Amplification via ActorEventPacket

Source: CVE Program / CVE List V5

Vulnerability Description

PocketMine-MP versions before 5.39.2 contain a network amplification vulnerability in ActorEventPacket handling that allows clients to trigger consuming animations for all visible players. Attackers can send crafted ActorEventPacket messages to spam animation events to other clients and waste server CPU and memory resources.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

对网络消息容量的控制不充分(网络放大攻击)

Source: CVE Program / CVE List V5

Vulnerability Title

PMMP PocketMine-MP 资源管理错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
pmmp	PocketMine-MP	0 ~ 5.39.2	-

II. Public POCs for CVE-2026-86202

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-86202

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Patches & Fixes for CVE-2026-86202 (1)

🔗 Stop handling ActorEventPacket from the client · pmmp/PocketMine-MP@aeea115 · GitHub Read full article patch

Vendor Advisories for CVE-2026-86202 (2)

🔗 Network amplification vulnerability with `ActorEventPacket` · Advisory · pmmp/PocketMine-MP · GitHub vendor-advisory
🔗 PocketMine-MP before 5.39.2 Network Amplification via ActorEventPacket | Advisories | VulnCheck third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-86202

Same Patch Batch · pmmp · 2026-09-09 · 18 CVEs total

CVE-2024-58381	7.5 HIGH	PocketMine-MP before 5.11.1 Denial of Service via LoginPacket
CVE-2026-86199	7.5 HIGH	PocketMine-MP before 5.43.1 Denial of Service via unauthenticated login
CVE-2026-86201	7.5 HIGH	PocketMine-MP before 5.41.1 LogDoS via LoginPacket clientData
CVE-2023-54390	7.5 HIGH	PocketMine-MP before 5.3.1 Denial of Service via LoginPacket
CVE-2023-54393	7.5 HIGH	PocketMine-MP before 4.20.5 Denial of Service via LoginPacket
CVE-2023-54355	7.5 HIGH	PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve
CVE-2023-54396	6.5 MEDIUM	PocketMine-MP before 4.8.1 Server Crash via Banner NBT
CVE-2023-54392	6.5 MEDIUM	PocketMine-MP before 4.22.3 Denial of Service via BlockActorDataPacket
CVE-2024-58380	6.5 MEDIUM	PocketMine-MP before 5.11.2 Denial of Service via BookEditPacket
CVE-2025-71417	6.5 MEDIUM	PocketMine-MP before 5.32.1 Denial of Service via ResourcePackClientResponsePacket
CVE-2026-86204	6.5 MEDIUM	PocketMine-MP before 5.39.2 Denial of Service via ModalFormResponsePacket
CVE-2025-71418	5.3 MEDIUM	PocketMine-MP before 5.25.2 Denial of Service via explode
CVE-2026-86200	5.3 MEDIUM	PocketMine-MP before 5.42.1 LogDoS via LoginPacket clientData JWT
CVE-2023-54395	4.3 MEDIUM	PocketMine-MP before 4.12.5 Denial of Service via ModalFormResponsePacket
CVE-2023-54394	4.3 MEDIUM	PocketMine-MP before 4.18.0-ALPHA2 Bandwidth Amplification via InventoryTransactionPacket
CVE-2026-86198	4.2 MEDIUM	PocketMine-MP before 5.44.2 Denial of Service via ResourcePackClientResponsePacket
CVE-2026-86203	3.7 LOW	PocketMine-MP before 5.39.2 Item Duplication via Despawn State

IV. Related Vulnerabilities

Same product: PocketMine-MP

Same vendor: pmmp

Same weakness: CWE-406