CVE-2022-51011 PocketMine-MP before 4.2.10 Denial of Service via Chat Messages
Attackers can cause server lockups by sending large chat messages with many newlines, requiring an upgrade to PocketMine-MP.
- 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-2022-51011?
CVE-2022-51011 is a medium-severity denial of service vulnerability in pmmp PocketMine-MP, published on 7 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
PocketMine-MP before 4.2.10 fails to validate the total length of incoming chat message blobs before splitting them by newline characters, allowing attackers to send large messages containing many newlines. Malicious clients can send megabyte-sized chat packets and bombard the server with thousands of such messages, causing server lockups lasting seconds or minutes.
Weakness: CWE-20
Which versions are affected by CVE-2022-51011?
2 open source packages ship an affected version, including pocketmine/pocketmine-mp.
| Package | Affected | Fixed in |
|---|---|---|
pocketmine/pocketmine-mp Packagist | All versions | 4.2.10 |
pocketmine/pocketmine-mp Packagist | All versions | 4.2.10 |
How do I fix CVE-2022-51011?
Upgrade pocketmine/pocketmine-mp to 4.2.10 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-2022-51011 being exploited?
There is no known exploitation of CVE-2022-51011 in the wild and no public exploit code.
Sources
Also known as GHSA-6p7x-53v3-p7hj, GHSA-gj94-v4p9-w672.