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Vulnerability record · CVE-2023-54390 · published 9 September 2026

CVE-2023-54390: PocketMine-MP versions before 5.3.1 and 4.23.1 contain a denial of service vulnerability in LoginPacket JSON p…

PocketMine-MP versions before 5.3.1 and 4.23.1 contain a denial of service vulnerability in LoginPacket JSON parsing due to improper null value handling in arrays. Attackers can send malformed JSON with unexpected null elements in LoginPacket to crash the server.

8.7 CVSS 4.0 High EPSS 0.34% · top 75.2% CWE-1025 · CWE-1025 Deferred
8.7CVSS 4.0 base score
0.34%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
9 Sep 2026Last modified by NVD

Description

PocketMine-MP versions before 5.3.1 and 4.23.1 contain a denial of service vulnerability in LoginPacket JSON parsing due to improper null value handling in arrays. Attackers can send malformed JSON with unexpected null elements in LoginPacket to crash the server.

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:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/pmmp/PocketMine-MP/commit/4f90e8dab1c9df331fad7d3d89823404e882668c
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-92jh-gwch-jq38
https://www.vulncheck.com/advisories/pocketmine-mp-before-5.3.1-denial-of-service-via-loginpacket

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Source: NIST National Vulnerability Database (record CVE-2023-54390), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.