Login Request a demo
Medium severity · published Sep 7, 2026
CVE-2022-51012
PocketMine-MP before 4.2.9 Denial of Service via NBT Deserialization
6.5
CVSS
0.5%
EPSS
No
On KEV
Description
PocketMine-MP versions before 4.2.9 fail to properly validate NBT data types during deserialization of inventory transaction packets from clients. Attackers can send crafted inventory transactions with malformed NBT tags to trigger server crashes and cause denial of service.
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 4.2.9 · source: vendor
Affected product
PO
PocketMine-MP
pmmp
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-51012
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-51012
vendor-advisory
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-g5rr-p69h-7v3g
patch
https://github.com/pmmp/PocketMine-MP/commit/5a98b08ee8dc8ff14862cd83d2e4af9d212fefc2
third-party-advisory
https://www.vulncheck.com/advisories/pocketmine-mp-before-4.2.9-denial-of-service-via-nbt-deserialization
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