Medium severity · published Sep 9, 2026
CVE-2023-54394
PocketMine-MP before 4.18.0-ALPHA2 Bandwidth Amplification via InventoryTransactionPacket
4.3
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PO
PocketMine-MP · pmmp
before 4.18.0-ALPHA2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-54394
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-54394
vendor-advisory
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-42qm-8v8m-m78c
patch
https://github.com/pmmp/PocketMine-MP/commit/ca6d51498f12427a947467da8fcad7811418e6cc
third-party-advisory
https://www.vulncheck.com/advisories/pocketmine-mp-before-4.18.0-alpha2-bandwidth-amplification-via-inventorytransactionpacket
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