# CVE-2022-51011: CVE-2022-51011

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

PocketMine-MP before 4.2.10 fails to validate the total length of incoming chat message blobs before splitting them by newline characters, allowing attackers to send large messages containing many newlines. Malicious clients can send megabyte-sized chat packets and bombard the server with thousands of such messages, causing server lockups lasting seconds or minutes.

## Remediation

- fix: pocketmine/pocketmine-mp (Packagist): OSV reports a fixed version 4.2.10. Check the advisory for supported release branches. (source: OSV GHSA-gj94-v4p9-w672) — https://github.com/advisories/GHSA-gj94-v4p9-w672

## 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); 4.2.9 (affected, Packagist); Ecosystem version events: introduced 0; fixed 4.2.10. Source: OSV GHSA-gj94-v4p9-w672

## Severity and prioritization

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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: 4.3 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L; 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/df33e179e5d3ff13b56a2d7060bf592b0f797258 (disclosure@vulncheck.com)

- https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-gj94-v4p9-w672 (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/pocketmine-mp-before-4.2.10-denial-of-service-via-chat-messages (disclosure@vulncheck.com)

- https://github.com/advisories/GHSA-gj94-v4p9-w672 (OSV / GitHub Security Advisories; advisory)

- https://osv.dev/vulnerability/GHSA-gj94-v4p9-w672 (OSV / GitHub Security Advisories; osv)

## Provenance

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-51011; retrieved 2026-11-10; source updated 2026-11-10

- OSV / GitHub Security Advisories: https://osv.dev/vulnerability/GHSA-gj94-v4p9-w672; retrieved 2026-11-10; source updated 2026-09-08

Revision: f8b6673f4f1ea4e95364dc1ef0e88bb41f4374a81ca8c0efcbc06104f2a6c6b8

Canonical: https://y2.dev/cve/CVE-2022-51011

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.