Medium severity5.3NVD Advisory· Published Sep 9, 2026· Updated Oct 8, 2026

CVE-2026-86200

Description

PocketMine-MP versions before 5.42.1 contain a denial of service vulnerability in the LoginPacket handler that allows remote attackers to flood warning messages by injecting numerous junk properties into the clientData JWT. Attackers can craft malicious login packets with excessive unknown properties to waste server CPU time and degrade performance.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Pmmp/Pocketmine Mpreferences2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)range: <5.42.1

Patches

Vulnerability mechanics

References

github.com/pmmp/PocketMine-MP/commit/c1d4a813fb8c21bfd8b9affd040da864b794df71nvd
github.com/pmmp/PocketMine-MP/security/advisories/GHSA-xp4f-g2cm-rhg7nvd
www.vulncheck.com/advisories/pocketmine-mp-before-5.42.1-logdos-via-loginpacket-clientdata-jwtnvd

News mentions

PocketMine-MP: 18 DoS Vulnerabilities Disclosed in Coordinated Batch
Vypr Intelligence · Sep 9, 2026

cvss	0.345
epss	0.001
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000