CVE-2021-48007CWE-20

PocketMine-MP before 3.18.1 Denial of Service via MovePlayerPacket

Medium · published September 6, 2026

CVSS v3.1

6.5

EPSS

—

In the wild

Unconfirmed

What it is

PocketMine-MP versions before 3.18.1 fail to validate NaN or INF values in MovePlayerPacket position and rotation fields. Malicious clients can send crafted movement packets with invalid floating-point values to crash servers through unhandled mathematical operations or prevent clients from rendering other players.

The record

Technical detail

CVSS v3.1: 6.5 · MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0: 7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS: Not scored
Weakness: CWE-20 · Improper Input Validation
Published: 2026-09-06T12:00Z

Timeline

06 SEP 12:00Z
PocketMine-MP before 3.18.1 Denial of Service via MovePlayerPacket
cvelistv5