CVE-2026-86201CWE-400denial-of-service

CVE-2026-86201

High · published September 9, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
48.5
In the wild
Unconfirmed
What it is

PocketMine-MP before 5.41.1 contains a denial of service vulnerability in LoginPacket processing where large or complex structures in unknown clientData JWT properties cause excessive logging without sanitization. Attackers can send crafted LoginPackets with deeply nested or massive object structures to trigger out-of-memory conditions and crash the server.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · 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
EPSS
0.00609 · 48.5th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-09-09T18:17Z
References (4)
https://github.com/pmmp/PocketMine-MP/commit/87d1c0cea09d972fd4c2fafb84dac2ecab7649f0 · [email protected]https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-h6rj-3m53-887h · [email protected]https://www.vulncheck.com/advisories/pocketmine-mp-before-5.41.1-logdos-via-loginpacket-clientdata · [email protected]https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-h6rj-3m53-887h · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 11 SEP 03:19Z
    EPSS moved — → 0%
    epss
  • 09 SEP 13:32Z
    PocketMine-MP before 5.41.1 LogDoS via LoginPacket clientData
    cvelistv5