High · CVSS 7.1CVE-2021-48007GHSA-FM35-JGG3-3GRX

PocketMine-MP before 3.18.1 Denial of Service via MovePlayerPacketCVE-2021-48007

Answer in brief

CVE-2021-48007 records a High severity (CVSS 7.1) vulnerability in PocketMine-MP before 3.18.1 Denial of Service via MovePlayerPacket. The current sources do not mark it as known exploited. The current feed maps pmmp/PocketMine-MP (generic), pocketmine/pocketmine-mp (packagist). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 6, 2026Updated Oct 8, 2026Source checked Oct 21, 2026First seen by HOL Sep 6, 2026Material review Oct 8, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.1
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps pmmp/PocketMine-MP (generic), pocketmine/pocketmine-mp (packagist). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
pmmp/PocketMine-MPgeneric	>=0 <3.18.1	3.18.1
pocketmine/pocketmine-mppackagist	>=0 <3.18.1	3.18.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for pmmp/PocketMine-MP, pocketmine/pocketmine-mp.
Review the reported fix. Update pmmp/PocketMine-MP to 3.18.1; pocketmine/pocketmine-mp to 3.18.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 6, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 6, 2026

Sources and claim methodology

Upstream source description

PocketMine-MP versions before 3.18.1 fail to validate NaN or INF values in MovePlayerPacket position and rotation fields. Malicious clients can send crafted movement packets with invalid floating-point values to crash servers through unhandled mathematical operations or prevent clients from rendering other players.

Quoted source text, attributed separately from HOL analysis.