Resource exhaustion in PocketMine-MP - #VU125428
Published: April 8, 2026
Vulnerability identifier: #VU125428
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PMMP
Affected software:
PocketMine-MP
PocketMine-MP
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in LoginPacket clientData processing when handling unexpected properties in the clientData JWT body. A remote attacker can send a specially crafted LoginPacket containing a large or complex unknown property to cause a denial of service.
The issue can spam the log or console and may waste CPU time serializing the offending structure.
Remediation
Install security update from vendor's website.