What is CVE-2023-54390?

CVE-2023-54390 is a high-severity vulnerability, classified under CWE-1025. CVSS score: 7.5/10. Published 2026-09-09.

How severe is CVE-2023-54390?

High severity. CVSS v3 base score is 7.5 out of 10.

CVE-2023-54390

CVE-2023-54390

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 v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Weakness classification (CWE)

CWE-1025

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2023-54390?: CVE-2023-54390 is a high-severity vulnerability, classified under CWE-1025. CVSS score: 7.5/10. Published 2026-09-09.
How severe is CVE-2023-54390?: High severity. CVSS v3 base score is 7.5 out of 10.