{"id":"CVE-2023-54355","revision":"b3a6d0e80bd9443ba3c1075f3971ff4c","records":[{"revision":"b3a6d0e80bd9443ba3c1075f3971ff4c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-54355","aliases":[],"title":"PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve","description":"PocketMine-MP versions before 5.3.1 and 4.23.1 fail to validate that the identityPublicKey in LoginPacket uses the required secp384r1 elliptic curve. Attackers can provide LoginPackets with keys using different curves or non-EC key types to pass login verification but trigger an uncaught exception during ECDH key derivation, crashing the server.","state":0,"publishedAt":"2026-09-09T13:31:50.013+00:00","modifiedAt":"2026-10-08T15:21:04.998+00:00","affected":[{"ecosystem":"Vendor product","name":"PocketMine-MP","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"pmmp\",\n                    \"product\": \"PocketMine-MP\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"4.23.1\"\n                        },\n                        {\n                            \"version\": \"5.2.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"5.3.1\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:composer/pocketmine/pocketmine-mp\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-79rc-jjh6-rc89","https://github.com/pmmp/PocketMine-MP/commit/4e646d19a4a1e0d082bd4d1f5a58ae0182a268d9","https://www.vulncheck.com/advisories/pocketmine-mp-5.2.0-server-crash-via-incorrect-ec-curve"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-54355","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-54355","identifiers":["CVE-2023-54355"]},"retained":false,"historicalAffected":[]}],"coverage":[]}