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TI-2026-58992 Aliases CVE-2026-86203GHSA-9pw9-9mpc-9mc3

PocketMine-MP before 5.39.2 Item Duplication via Despawn State

Priority LOW 28CWE-664Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

PocketMine-MP versions before 5.39.2 fail to validate entity despawn state when processing attack packets from clients. Attackers can exploit a race condition by attacking a disconnecting player to trigger multiple death handlers, causing inventory items and experience to drop multiple times for duplication.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00348 28th percentileScored 2026-11-07
Fix Fixed PocketMine-MP (pmmp): 5.39.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
pmmpPocketMine-MPbefore 5.39.25.39.2Patch availableCNA
  • PocketMine-MP Vendorpmmp Affected before 5.39.2 Fixed in 5.39.2 Patch available CNA

Remediation

  • Fix · CNA PocketMine-MP (pmmp) Fixed in 5.39.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    pmmp PocketMine-MP 5.39.2

    3 records Highest priority Priority MEDIUM 1 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-58993 PocketMine-MP before 5.39.2 Denial of Service via ModalFormResponsePacketPriority MEDIUM 64
    • TI-2026-58991 PocketMine-MP before 5.39.2 Network Amplification via ActorEventPacketPriority LOW 24
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-86203
  2. 2026-10-03 Alias added: GHSA-9pw9-9mpc-9mc3

References

Patch 1

Advisory 1

  • TI-2026-58990 PocketMine-MP before 5.41.1 LogDoS via LoginPacket clientData CVSS 4.0HIGH 8.7
  • TI-2026-58988 PocketMine-MP before 5.43.1 Denial of Service via unauthenticated login CVSS 4.0HIGH 8.7
  • TI-2026-58993 PocketMine-MP before 5.39.2 Denial of Service via ModalFormResponsePacket CVSS 4.0HIGH 7.1
  • TI-2024-38460 PocketMine-MP before 5.11.1 Denial of Service via LoginPacket CVSS 4.0HIGH 8.7
  • TI-2023-30643 PocketMine-MP before 4.20.5 Denial of Service via LoginPacket CVSS 4.0HIGH 8.7
  • TI-2023-30640 PocketMine-MP before 5.3.1 Denial of Service via LoginPacket CVSS 4.0HIGH 8.7
See all 32 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences