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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.

PocketMine-MP 5.39.2 之前的版本存在一个网络放大漏洞，位于 ActorEventPacket 的处理逻辑中，允许客户端触发所有可见玩家的消耗性动画。攻击者可以发送精心构造的 ActorEventPacket 消息，向其他客户端发送大量的动画事件，从而浪费服务器的 CPU 和内存资源。

CVSS 4.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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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

Affected Products

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

II. Public POCs for CVE-2026-86202

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III. Intelligence Information for CVE-2026-86202

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Other References for CVE-2026-86202 (3)

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

V. Comments for CVE-2026-86202

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