# CVE-2020-37277

## Summary

- **CVE ID:** CVE-2020-37277
- **Severity:** HIGH
- **CVSS Score:** 7.1 (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)
- **CWE:** CWE-400
- **Published:** Sep 6, 2026
- **Last Modified:** Sep 8, 2026

## Description

PocketMine-MP versions before 3.15.4 contain a denial of service vulnerability in the InventoryTransaction component's findResultItem() method. Malicious clients can send specially crafted InventoryTransactionPackets with multiple conflicting pathways to cause exponential processing complexity, freezing the server.

## Affected Products

- pmmp — PocketMine-MP (0)
- pmmp — PocketMine-MP (3.15.4)

## References

- [CNA](https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-8jq6-w5cg-wm45)
- [CNA](https://github.com/pmmp/PocketMine-MP/commit/c368ebb5e74632bc622534b37cd1447b97281e20)
- [CNA](https://www.vulncheck.com/advisories/pocketmine-mp-before-3.15.4-denial-of-service-via-inventorytransaction)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 22.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._