CVE-2026-86204
PocketMine-MP before 5.39.2 Denial of Service via ModalFormResponsePacket
- State
- Published
- Severity
- 7.1 High
- Published
- Sep 9, 2026
- Updated
- Oct 8, 2026
- Reserved
- Sep 5, 2026
Description
PocketMine-MP versions before 5.39.2 fail to limit JSON payload size in ModalFormResponsePacket handling, allowing authenticated players to cause denial of service. Attackers can send modal form response packets with massive JSON arrays to exhaust server memory and CPU resources, rendering the server unresponsive.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-400 Uncontrolled Resource Consumption
Affected Products
| Product | Versions |
|---|---|
PocketMine-MPpmmp |
|
References
- GitHub Security Advisory (GHSA-788v-5pfp-93ff)vendor-advisory
- VulnCheck Advisory: PocketMine-MP before 5.39.2 Denial of Service via ModalFormResponsePacketthird-party-advisory
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