What is CVE-2021-48007?

CVE-2021-48007 is a medium-severity vulnerability in Pmmp Pocketmine-Mp, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-09-06.

How severe is CVE-2021-48007?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Pmmp Pocketmine-Mp

CVE-2021-48007

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2026-09-06 · last modified 2026-10-08.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (21.0th percentile), scored 2026-10-22.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Pmmp Pocketmine-Mp

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

github.com/pmmp/PocketMine-MP/commit/fb20bb38327b4c08ee3976640cd0dd547388a638 (patch)
github.com/pmmp/PocketMine-MP/security/advisories/GHSA-fm35-jgg3-3grx (vendor-advisory)
www.vulncheck.com/advisories/pocketmine-mp-before-3.18.1-denial-of-service-via-… (third-party-advisory)

Frequently asked questions

What is CVE-2021-48007?: CVE-2021-48007 is a medium-severity vulnerability in Pmmp Pocketmine-Mp, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-09-06.
How severe is CVE-2021-48007?: Medium severity. CVSS v3 base score is 6.5 out of 10.