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Medium

PocketMine-MP before 5.42.1 LogDoS via LoginPacket clientData JWT

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-86200

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-86200

PocketMine-MP

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "pmmp",
    "product": "PocketMine-MP",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "5.42.1",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.42.1",
        "versionType": "semver"
      }
    ],
    "packageURL": "pkg:composer/pocketmine/pocketmine-mp",
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-86200

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#12938 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement