Medium severity · published Sep 6, 2026
CVE-2020-37277
PocketMine-MP before 3.15.4 Denial of Service via InventoryTransaction
6.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PO
PocketMine-MP · pmmp
before 3.15.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-37277
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-37277
vendor-advisory
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-8jq6-w5cg-wm45
patch
https://github.com/pmmp/PocketMine-MP/commit/c368ebb5e74632bc622534b37cd1447b97281e20
third-party-advisory
https://www.vulncheck.com/advisories/pocketmine-mp-before-3.15.4-denial-of-service-via-inventorytransaction
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