PocketMine-MP before 5.42.1 LogDoS via LoginPacket clientData JWT
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.
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