CVE-2023-54394

PocketMine-MP before 4.18.0-ALPHA2 Bandwidth Amplification via InventoryTransactionPacket

MEDIUM
4.3
CVSS Score
Published: September 9, 2026 at 01:31 PM UTC
Updated: October 8, 2026 at 04:16 PM UTC
1 product affected across 1 vendorPocketMine-MP

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 4.18.0-ALPHA20
Vendor states this is fixed in 4.18.0-ALPHA2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-770

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