CVE-2023-54395 PocketMine-MP before 4.12.5 Denial of Service via ModalFormResponsePacket
Attackers can cause server resource exhaustion and denial of service by sending oversized JSON payloads in modal form response packets.
- 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-2023-54395?
CVE-2023-54395 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 versions before 4.12.5 contain a denial-of-service vulnerability in ModalFormResponsePacket processing that allows attackers to cause server resource exhaustion by sending large JSON payloads. Attackers can send numerous oversized modal form response packets to consume CPU time and prevent the server from processing legitimate connections.
Weakness: CWE-407
Which versions are affected by CVE-2023-54395?
2 open source packages ship an affected version, including pocketmine/pocketmine-mp.
| Package | Affected | Fixed in |
|---|---|---|
pocketmine/pocketmine-mp Packagist | All versions | 4.12.5 |
pocketmine/pocketmine-mp Packagist | All versions | 4.12.5 |
How do I fix CVE-2023-54395?
Upgrade pocketmine/pocketmine-mp to 4.12.5 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-2023-54395 being exploited?
There is no known exploitation of CVE-2023-54395 in the wild and no public exploit code.
Sources
Also known as GHSA-3vjv-jh7h-xv9f, GHSA-7m9r-rq9j-wmmh.