Logging of Excessive Data in PocketMine-MP - #VU132306
Published: May 26, 2026
Vulnerability identifier: #VU132306
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-779
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 logging of excessive data in the LoginPacket handler when processing the clientData JWT body. A remote attacker can send a crafted LoginPacket containing many junk properties to cause a denial of service.
The issue can flood warning logs and waste CPU time.
Affected software
PocketMine-MP
Remediation
Install security update from vendor's website.
PocketMine-MP - update to 5.42.1