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WS-2023-0321

Date: August 19, 2025

PocketMine-MP server crash with certain invalid JSON payloads in `LoginPacket` An attacker could crash the server by sending malformed JWT JSON in LoginPacket due to a security vulnerability in netresearch/jsonmapper, due to accepting NULL values in arrays whose types do not expect NULL.

Language: PHP

Severity Score

Related Resources (5)

https://github.com/pmmp/netresearch-jsonmapper/commit/4f90e8dab1c9df331fad7d3d89823404e882668c
https://github.com/pmmp/PocketMine-MP
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-92jh-gwch-jq38
https://github.com/advisories/GHSA-92jh-gwch-jq38
https://www.mend.io/vulnerability-database/WS-2023-0321

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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