Medium severity · published Sep 6, 2026
CVE-2021-48007
PocketMine-MP before 3.18.1 Denial of Service via MovePlayerPacket
6.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PO
PocketMine-MP · pmmp
before 3.18.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-48007
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-48007
vendor-advisory
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-fm35-jgg3-3grx
patch
https://github.com/pmmp/PocketMine-MP/commit/fb20bb38327b4c08ee3976640cd0dd547388a638
third-party-advisory
https://www.vulncheck.com/advisories/pocketmine-mp-before-3.18.1-denial-of-service-via-moveplayerpacket
More from PocketMine-MP
7.5
CVE-2026-86201
PocketMine-MP before 5.41.1 LogDoS via LoginPacket clientData
7.5
CVE-2026-86199
PocketMine-MP before 5.43.1 Denial of Service via unauthenticated login
7.5
CVE-2024-58381
PocketMine-MP before 5.11.1 Denial of Service via LoginPacket
7.5
CVE-2023-54393
PocketMine-MP before 4.20.5 Denial of Service via LoginPacket
7.5
CVE-2023-54390
PocketMine-MP before 5.3.1 Denial of Service via LoginPacket