Incomplete List of Disallowed Inputs in PocketMine-MP - #VU132307
Published: May 26, 2026
Vulnerability identifier: #VU132307
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-184
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 incomplete list of disallowed inputs in the offline login flow when handling login requests from players without Xbox authentication. A remote attacker can send a login request without Xbox authentication to cause a denial of service.
The issue occurs before the player is fully rejected.
Affected software
PocketMine-MP
Remediation
Install security update from vendor's website.
PocketMine-MP - update to 5.43.1