CVE-2023-54394 PocketMine-MP before 4.18.0-ALPHA2 Bandwidth Amplification via InventoryTransactionPacket
Unauthenticated attackers can cause bandwidth exhaustion and denial of service by sending excessive inventory transaction packets to PocketMine-MP servers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-54394?
CVE-2023-54394 is a medium-severity denial of service vulnerability in pmmp PocketMine-MP, published on 9 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-770
Which versions are affected by CVE-2023-54394?
2 open source packages ship an affected version, including pocketmine/pocketmine-mp.
| Package | Affected | Fixed in |
|---|---|---|
pocketmine/pocketmine-mp Packagist | All versions | 4.18.0-ALPHA2 |
pocketmine/pocketmine-mp Packagist | All versions | 4.18.0-ALPHA2 |
How do I fix CVE-2023-54394?
Upgrade pocketmine/pocketmine-mp to 4.18.0-ALPHA2 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-54394 being exploited?
There is no known exploitation of CVE-2023-54394 in the wild and no public exploit code.
Sources
Also known as GHSA-42qm-8v8m-m78c, GHSA-52jh-wmr6-rc6r.