# CVE-2026-86199

## Summary

- **CVE ID:** CVE-2026-86199
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-184
- **Published:** Sep 9, 2026
- **Last Modified:** Sep 9, 2026

## Description

PocketMine-MP versions before 5.43.1 fail to properly validate the Certificate field during offline login authentication. Unauthenticated players can trigger an uninitialized property access error that crashes the server.

## Affected Products

- pmmp — PocketMine-MP (0)
- pmmp — PocketMine-MP (5.43.1)

## References

- [CNA](https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-g2fj-p69p-9chp)
- [CNA](https://github.com/pmmp/PocketMine-MP/commit/e4aaef4ee0f769b52dc0347a1d6da403b9691115)
- [CNA](https://github.com/pmmp/PocketMine-MP/commit/8c75a1d739e8e190d3cc2338b25cebcc9c052b1b)
- [CNA](https://www.vulncheck.com/advisories/pocketmine-mp-before-5.43.1-denial-of-service-via-unauthenticated-login)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._