# CVE-2022-51008: PocketMine-MP before 4.12.3 Denial of Service via Unauthenticated Sessions

> Attackers can exhaust player slots by creating unauthenticated sessions, preventing legitimate users from joining the Minecraft server.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Sep 2026
- **Updated:** 8 Sep 2026
- **Also known as:** GHSA-474q-9hgp-hcvx, GHSA-7pwm-93wh-wvjw

## What is CVE-2022-51008?

CVE-2022-51008 is a medium-severity denial of service vulnerability in pmmp PocketMine-MP, published on 6 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

PocketMine-MP before 4.12.3 fails to limit unauthenticated sessions, allowing attackers to exhaust player slots by creating sessions without sending LoginPacket. Attackers can flood the server with unauthenticated connections that occupy max-player slots, preventing legitimate players from joining.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2022-51008?


## How do I fix CVE-2022-51008?

No fix has been published for CVE-2022-51008 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-51008 being exploited?

There is no known exploitation of CVE-2022-51008 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-51008 and fix it if it is affected.

What it is: CVE-2022-51008 is a medium-severity denial of service vulnerability in pmmp PocketMine-MP, published on 6 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-51008 in the wild and no public exploit code.

Affected product: pmmp PocketMine-MP. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2022-51008/ (Markdown: https://insights.sbomify.com/CVE-2022-51008/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-51008
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-51008
- OSV: https://osv.dev/vulnerability/CVE-2022-51008

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-51008/
Summaries are generated and may contain mistakes; the official description above is the record.