Vulnerability · Published Sep 6, 2026 · Assigned by VulnCheck

CVE-2020-37277PocketMine-MP before 3.15.4 Denial of Service via InventoryTransaction

Medium 6.5

In plain English

A medium-severity uncontrolled resource consumption in PocketMine-MP from pmmp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.5%top 55.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	pocketmine/pocketmine-mp	3.15.4	GHSA-8jq6-w5cg-wm45

Affected products (as reported)

Vendor	Product	Versions
pmmp	PocketMine-MP	0 – before 3.15.4

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-8jq6-w5cg-wm45) vendor-advisory
https://github.com/pmmp/PocketMine-MP/commit/c368ebb5e74632bc622534b37cd1447b97281e20 patch
VulnCheck Advisory: PocketMine-MP before 3.15.4 Denial of Service via InventoryTransaction third-party-advisory