What is CVE-2026-86198?

CVE-2026-86198 is a medium-severity vulnerability in Pmmp Pocketmine-Mp, classified under CWE-837. CVSS score: 4.2/10. Published 2026-09-09.

How severe is CVE-2026-86198?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Vulnerability in Pmmp Pocketmine-Mp

CVE-2026-86198

PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L.

Affected products

Pmmp Pocketmine-mp

Weakness classification (CWE)

CWE-837

References

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

Frequently asked questions

What is CVE-2026-86198?: CVE-2026-86198 is a medium-severity vulnerability in Pmmp Pocketmine-Mp, classified under CWE-837. CVSS score: 4.2/10. Published 2026-09-09.
How severe is CVE-2026-86198?: Medium severity. CVSS v3 base score is 4.2 out of 10.