What is CVE-2020-37277?

CVE-2020-37277 is a medium-severity vulnerability in Pmmp Pocketmine-Mp, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-09-06.

How severe is CVE-2020-37277?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Pmmp Pocketmine-Mp

CVE-2020-37277

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.

Vulnerability class: DoS (Denial of Service)

Published 2026-09-06 · last modified 2026-10-08.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (21.0th percentile), scored 2026-10-22.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Pmmp Pocketmine-Mp

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

github.com/pmmp/PocketMine-MP/commit/c368ebb5e74632bc622534b37cd1447b97281e20 (patch)
github.com/pmmp/PocketMine-MP/security/advisories/GHSA-8jq6-w5cg-wm45 (vendor-advisory)
www.vulncheck.com/advisories/pocketmine-mp-before-3.15.4-denial-of-service-via-… (third-party-advisory)

Frequently asked questions

What is CVE-2020-37277?: CVE-2020-37277 is a medium-severity vulnerability in Pmmp Pocketmine-Mp, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-09-06.
How severe is CVE-2020-37277?: Medium severity. CVSS v3 base score is 6.5 out of 10.