What is CVE-2026-86199?

CVE-2026-86199 is a high-severity vulnerability in Pmmp Pocketmine-Mp, classified under Incomplete List of Disallowed Inputs. CVSS score: 7.5/10. Published 2026-09-09.

How severe is CVE-2026-86199?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Pmmp Pocketmine-Mp

CVE-2026-86199

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.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Pmmp Pocketmine-mp

Weakness classification (CWE)

CWE-184 — Incomplete List of Disallowed Inputs

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-86199?: CVE-2026-86199 is a high-severity vulnerability in Pmmp Pocketmine-Mp, classified under Incomplete List of Disallowed Inputs. CVSS score: 7.5/10. Published 2026-09-09.
How severe is CVE-2026-86199?: High severity. CVSS v3 base score is 7.5 out of 10.