CVE-2023-54394

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 4.0

5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS

0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-25)

CWE

CWE-770

Published

2026-09-09

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

References

• https://github.com/pmmp/PocketMine-MP/commit/ca6d51498f12427a947467da8fcad7811418e6cc
• https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-42qm-8v8m-m78c
• https://www.vulncheck.com/advisories/pocketmine-mp-before-4.18.0-alpha2-bandwidth-amplification-via-inventorytransactionpacket

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