CVE-2026-86199
PocketMine-MP before 5.43.1 Denial of Service via unauthenticated login
- State
- Published
- Severity
- 8.7 High
- Published
- Sep 9, 2026
- Updated
- Sep 9, 2026
- Reserved
- Sep 5, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-184 Incomplete List of Disallowed Inputs
Affected Products
| Product | Versions |
|---|---|
PocketMine-MPpmmp |
|
References
- GitHub Security Advisory (GHSA-g2fj-p69p-9chp)vendor-advisory
- Patch Commitpatch
- Patch Commitpatch
- VulnCheck Advisory: PocketMine-MP before 5.43.1 Denial of Service via unauthenticated loginthird-party-advisory
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