CVE-2023-54393
PocketMine-MP before 4.20.5 Denial of Service via LoginPacket
- State
- Published
- Severity
- 8.7 High
- Published
- Sep 9, 2026
- Updated
- Oct 8, 2026
- Reserved
- Sep 5, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-20 Improper Input Validation
Affected Products
| Product | Versions |
|---|---|
PocketMine-MPpmmp |
|
References
- GitHub Security Advisory (GHSA-pqp3-8rrw-g8vm)vendor-advisory
- Patch Commitpatch
- Patch Commitpatch
- VulnCheck Advisory: PocketMine-MP before 4.20.5 Denial of Service via LoginPacketthird-party-advisory
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