# CVE-2022-51012: CVE-2022-51012

Status: published. Published: 2026-09-07. Updated: 2026-11-10.

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.

## Remediation

- fix: pocketmine/pocketmine-mp (Packagist): OSV reports a fixed version 4.2.9. Check the advisory for supported release branches. (source: OSV GHSA-g5rr-p69h-7v3g) — https://github.com/advisories/GHSA-g5rr-p69h-7v3g

## Affected products and versions

-  / pocketmine/pocketmine-mp (pocketmine/pocketmine-mp): 3.0.0 (affected, Packagist); 3.0.1 (affected, Packagist); 3.0.10 (affected, Packagist); 3.0.11 (affected, Packagist); 3.0.12 (affected, Packagist); 3.0.2 (affected, Packagist); 3.0.3 (affected, Packagist); 3.0.4 (affected, Packagist); 3.0.5 (affected, Packagist); 3.0.6 (affected, Packagist); 3.0.7 (affected, Packagist); 3.0.8 (affected, Packagist); 3.0.9 (affected, Packagist); 3.1.0 (affected, Packagist); 3.1.1 (affected, Packagist); 3.1.2 (affected, Packagist); 3.1.3 (affected, Packagist); 3.1.4 (affected, Packagist); 3.1.5 (affected, Packagist); 3.1.6 (affected, Packagist); 3.1.7 (affected, Packagist); 3.1.8 (affected, Packagist); 3.10.0 (affected, Packagist); 3.10.1 (affected, Packagist); 3.11.0 (affected, Packagist); 3.11.1 (affected, Packagist); 3.11.2 (affected, Packagist); 3.11.3 (affected, Packagist); 3.11.4 (affected, Packagist); 3.11.5 (affected, Packagist); 3.11.6 (affected, Packagist); 3.11.7 (affected, Packagist); 3.12.0 (affected, Packagist); 3.12.1 (affected, Packagist); 3.12.2 (affected, Packagist); 3.12.3 (affected, Packagist); 3.12.4 (affected, Packagist); 3.12.5 (affected, Packagist); 3.12.6 (affected, Packagist); 3.13.0 (affected, Packagist); 3.13.1 (affected, Packagist); 3.14.0 (affected, Packagist); 3.14.1 (affected, Packagist); 3.14.2 (affected, Packagist); 3.14.3 (affected, Packagist); 3.15.0 (affected, Packagist); 3.15.1 (affected, Packagist); 3.15.2 (affected, Packagist); 3.15.3 (affected, Packagist); 3.15.4 (affected, Packagist); 3.16.0 (affected, Packagist); 3.16.1 (affected, Packagist); 3.17.0 (affected, Packagist); 3.17.1 (affected, Packagist); 3.17.2 (affected, Packagist); 3.17.3 (affected, Packagist); 3.17.4 (affected, Packagist); 3.17.5 (affected, Packagist); 3.17.6 (affected, Packagist); 3.17.7 (affected, Packagist); 3.18.0 (affected, Packagist); 3.18.1 (affected, Packagist); 3.18.2 (affected, Packagist); 3.19.0 (affected, Packagist); 3.19.1 (affected, Packagist); 3.19.2 (affected, Packagist); 3.19.3 (affected, Packagist); 3.2.0 (affected, Packagist); 3.2.1 (affected, Packagist); 3.2.2 (affected, Packagist); 3.2.3 (affected, Packagist); 3.2.4 (affected, Packagist); 3.2.5 (affected, Packagist); 3.2.6 (affected, Packagist); 3.2.7 (affected, Packagist); 3.20.0 (affected, Packagist); 3.21.0 (affected, Packagist); 3.21.1 (affected, Packagist); 3.22.0 (affected, Packagist); 3.22.1 (affected, Packagist); 3.22.2 (affected, Packagist); 3.22.3 (affected, Packagist); 3.22.4 (affected, Packagist); 3.22.5 (affected, Packagist); 3.23.0 (affected, Packagist); 3.23.1 (affected, Packagist); 3.24.0 (affected, Packagist); 3.25.0 (affected, Packagist); 3.25.1 (affected, Packagist); 3.25.2 (affected, Packagist); 3.25.3 (affected, Packagist); 3.25.4 (affected, Packagist); 3.25.5 (affected, Packagist); 3.25.6 (affected, Packagist); 3.26.0 (affected, Packagist); 3.26.1 (affected, Packagist); 3.26.2 (affected, Packagist); 3.26.3 (affected, Packagist); 3.26.4 (affected, Packagist); 3.26.5 (affected, Packagist); 3.27.0 (affected, Packagist); 3.28.0 (affected, Packagist); 3.3.0 (affected, Packagist); 3.3.1 (affected, Packagist); 3.3.2 (affected, Packagist); 3.3.3 (affected, Packagist); 3.3.4 (affected, Packagist); 3.4.0 (affected, Packagist); 3.4.1 (affected, Packagist); 3.4.2 (affected, Packagist); 3.4.3 (affected, Packagist); 3.5.0 (affected, Packagist); 3.5.1 (affected, Packagist); 3.5.10 (affected, Packagist); 3.5.11 (affected, Packagist); 3.5.12 (affected, Packagist); 3.5.13 (affected, Packagist); 3.5.2 (affected, Packagist); 3.5.3 (affected, Packagist); 3.5.4 (affected, Packagist); 3.5.5 (affected, Packagist); 3.5.6 (affected, Packagist); 3.5.7 (affected, Packagist); 3.5.8 (affected, Packagist); 3.5.9 (affected, Packagist); 3.6.0 (affected, Packagist); 3.6.1 (affected, Packagist); 3.6.2 (affected, Packagist); 3.6.3 (affected, Packagist); 3.6.4 (affected, Packagist); 3.6.5 (affected, Packagist); 3.6.6 (affected, Packagist); 3.7.0 (affected, Packagist); 3.7.1 (affected, Packagist); 3.7.2 (affected, Packagist); 3.7.3 (affected, Packagist); 3.8.0 (affected, Packagist); 3.8.1 (affected, Packagist); 3.8.2 (affected, Packagist); 3.8.3 (affected, Packagist); 3.8.4 (affected, Packagist); 3.8.5 (affected, Packagist); 3.8.6 (affected, Packagist); 3.8.7 (affected, Packagist); 3.9.0 (affected, Packagist); 3.9.1 (affected, Packagist); 3.9.2 (affected, Packagist); 3.9.3 (affected, Packagist); 3.9.4 (affected, Packagist); 3.9.5 (affected, Packagist); 3.9.6 (affected, Packagist); 3.9.7 (affected, Packagist); 3.9.8 (affected, Packagist); 4.0.0 (affected, Packagist); 4.0.0-BETA1 (affected, Packagist); 4.0.0-BETA10 (affected, Packagist); 4.0.0-BETA11 (affected, Packagist); 4.0.0-BETA12 (affected, Packagist); 4.0.0-BETA13 (affected, Packagist); 4.0.0-BETA14 (affected, Packagist); 4.0.0-BETA15 (affected, Packagist); 4.0.0-BETA2 (affected, Packagist); 4.0.0-BETA3 (affected, Packagist); 4.0.0-BETA4 (affected, Packagist); 4.0.0-BETA5 (affected, Packagist); 4.0.0-BETA6 (affected, Packagist); 4.0.0-BETA7 (affected, Packagist); 4.0.0-BETA8 (affected, Packagist); 4.0.0-BETA9 (affected, Packagist); 4.0.1 (affected, Packagist); 4.0.2 (affected, Packagist); 4.0.3 (affected, Packagist); 4.0.4 (affected, Packagist); 4.0.5 (affected, Packagist); 4.0.6 (affected, Packagist); 4.0.7 (affected, Packagist); 4.0.8 (affected, Packagist); 4.0.9 (affected, Packagist); 4.1.0 (affected, Packagist); 4.1.0-BETA1 (affected, Packagist); 4.1.0-BETA2 (affected, Packagist); 4.2.0 (affected, Packagist); 4.2.1 (affected, Packagist); 4.2.2 (affected, Packagist); 4.2.3 (affected, Packagist); 4.2.4 (affected, Packagist); 4.2.5 (affected, Packagist); 4.2.6 (affected, Packagist); 4.2.7 (affected, Packagist); 4.2.8 (affected, Packagist); Ecosystem version events: introduced 0; fixed 4.2.9. Source: OSV GHSA-g5rr-p69h-7v3g

## Severity and prioritization

- CVSS 4.0: 7.1 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact partial; source NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- Weaknesses: CWE-20

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/pmmp/PocketMine-MP/commit/5a98b08ee8dc8ff14862cd83d2e4af9d212fefc2 (disclosure@vulncheck.com)

- https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-g5rr-p69h-7v3g (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/pocketmine-mp-before-4.2.9-denial-of-service-via-nbt-deserialization (disclosure@vulncheck.com)

- https://github.com/advisories/GHSA-g5rr-p69h-7v3g (OSV / GitHub Security Advisories; advisory)

- https://osv.dev/vulnerability/GHSA-g5rr-p69h-7v3g (OSV / GitHub Security Advisories; osv)

## Provenance

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-51012; retrieved 2026-11-10; source updated 2026-11-10

- OSV / GitHub Security Advisories: https://osv.dev/vulnerability/GHSA-g5rr-p69h-7v3g; retrieved 2026-11-10; source updated 2026-09-08

Revision: 97b4995c29eec7c175e6da24021e2f5d9d224acd1536bff627483ea0487ef5e5

Canonical: https://y2.dev/cve/CVE-2022-51012

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