CVE-2023-54393
CVSS v3
7.5
HIGH
EPSS Score
0.4 %
exploit probability, as of 2026-09-28
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
PocketMine-MP versions before 4.20.5 contain a denial of service vulnerability in LoginPacket JSON parsing due to improper validation in the JsonMapper dependency. Attackers can send malformed JSON structures in LoginPacket to crash the server.
Technical details
- Published
- 2026-09-09
- Last Modified
- 2026-09-09
Frequently asked questions
What is CVE-2023-54393?
PocketMine-MP versions before 4.20.5 contain a denial of service vulnerability in LoginPacket JSON parsing due to improper validation in the JsonMapper dependency. Attackers can send malformed JSON structures in LoginPacket to crash the server.
Is CVE-2023-54393 actively exploited?
Active exploitation of CVE-2023-54393 has not been confirmed. Its EPSS score was 0.4% on 2026-09-28, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2023-54393?
CVE-2023-54393 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2023-54393 affecting your environment?
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