Improper input validation in PocketMine-MP - #VU125421
Published: May 19, 2021 / Updated: April 8, 2026
Vulnerability identifier: #VU125421
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in MovePlayerPacket handling when processing serverbound movement packets containing NaN or INF values in position or rotation fields. A remote attacker can send a specially crafted MovePlayerPacket to cause a denial of service.
Malformed rotation values may also prevent clients from seeing other clients correctly, and clients may crash when such values are processed.
Affected software
PocketMine-MP
Remediation
Install security update from vendor's website.
PocketMine-MP - update to 3.18.1