pocketmine/pocketmine-mp · Pocketmine mp: PocketMine-MP has potential memory/network vulnerability from repeated ResourcePackClientResponsePacket
Affects pocketmine/pocketmine-mpSource GCVE Database
CVSS 2.3 Low : upgrade to 5.44.2 when convenient.
Data as of 29 Oct 2026, 17:22 UTC
- Patch
- Available – fixed in 5.44.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:NWhat to do
Upgrade pocketmine/pocketmine-mp to 5.44.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Packagistpocketmine/pocketmine-mp | Affected
| Fixed in
|
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AI-suggested
This issue has been patched in PocketMine-MP version 5.44.2. Users should upgrade to this version or later to remediate the vulnerability. As a workaround, plugins can implement custom PacketHandler classes to reject or ignore extra ResourcePackClientResponsePacket packets. No other vendor advisories indicate additional mitigation steps.
Description
PocketMine-MP versions prior to 5.44.2 have a vulnerability during the resource pack stage of client login. A malicious client can send multiple ResourcePackClientResponsePacket packets with a completed status, causing the server to repeatedly execute pre-spawn progression. This leads to the creation of multiple Player objects for a single session, increasing memory usage and outbound network traffic due to duplicated large pre-spawn packets. The issue was patched in version 5.44.2.
References
- github.com/pmmp/PocketMine-MP/security/advisories/GHSA-pg53-p7qp-65cv (opens in a new tab)
- github.com/pmmp/PocketMine-MP/commit/7a27894146a04964ab628ed9033140fdbf887ff3 (opens in a new tab)
- github.com/pmmp/PocketMine-MP (opens in a new tab)
- github.com/pmmp/PocketMine-MP/releases/tag/5.44.2 (opens in a new tab)