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CVE-2023-54394— PocketMine-MP before 4.18.0-ALPHA2 Bandwidth Amplification via InventoryTransactionPacket

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 4.18.0-ALPHA2之前版本存在资源管理错误漏洞，该漏洞源于未能对类型不匹配的InventoryTransactionPacket请求进行速率限制，可能导致未经身份验证的攻击者发送大量不匹配事务，迫使服务器传输大量序列化库存数据，触发过量的库存同步并消耗大量带宽。

CVSS 4.3 · Medium EPSS 0.38% · P31 Updated Oct 08, 2026

Possible ATT&CK Techniques 1 AI

T1514

Affected Version Matrix 2

Vendor	Product	Version Range	Status
pmmp	PocketMine-MP	`< 4.18.0-ALPHA2`	affected
		`4.18.0-ALPHA2`	unaffected

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I. Basic Information for CVE-2023-54394

Vulnerability Information

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title

PocketMine-MP before 4.18.0-ALPHA2 Bandwidth Amplification via InventoryTransactionPacket

Source: CVE Program / CVE List V5

Vulnerability Description

PocketMine-MP before 4.18.0-ALPHA2 fails to rate-limit mismatch type InventoryTransactionPacket requests, allowing attackers to trigger excessive inventory synchronization. Attackers can send numerous mismatch transactions to force the server to transmit large amounts of serialized inventory data, consuming significant bandwidth without authentication.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

不加限制或调节的资源分配

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 ~ 4.18.0-ALPHA2	-

II. Public POCs for CVE-2023-54394

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2023-54394

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Patches & Fixes for CVE-2023-54394 (1)

🔗 Buffer slot and content syncing until the end of the tick · pmmp/PocketMine-MP@ca6d514 · GitHub Read full article patch

Vendor Advisories for CVE-2023-54394 (2)

https://www.cve.org/CVERecord?id=CVE-2023-54394

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

CVE-2023-54393	7.5 HIGH	PocketMine-MP before 4.20.5 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-2024-58381	7.5 HIGH	PocketMine-MP before 5.11.1 Denial of Service via LoginPacket
CVE-2023-54390	7.5 HIGH	PocketMine-MP before 5.3.1 Denial of Service via LoginPacket
CVE-2023-54355	7.5 HIGH	PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve
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-2023-54396	6.5 MEDIUM	PocketMine-MP before 4.8.1 Server Crash via Banner NBT
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-2026-86202	4.3 MEDIUM	PocketMine-MP before 5.39.2 Network Amplification via ActorEventPacket
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-770