High
PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2023-54355
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 17:07 UTC · Revision 1
Source evidence
PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve
core-osv · Original sourcePublished 9 Sept 2026, 13:31 UTC
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.
osv:CVE-2023-54355
Complete source record
{
"id": "65618f5f879d5bc6494948562093e0bbac03424e853f12cfcaf87beef8dba164",
"url": "https://osv.dev/vulnerability/CVE-2023-54355",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve",
"summary": "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.",
"evidence": "osv:CVE-2023-54355",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2023-54355",
"aliases": [
"CVE-2023-54355",
"GHSA-79rc-jjh6-rc89"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/pmmp/pocketmine-mp",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "935df620066f5f9b812ba09ffe372fadc26d9722"
},
{
"introduced": "e6de9a70a211e1c2f4472dc2c4a0155ba0ffa5b2"
},
{
"fixed": "250d18e41bb6fc671cbd2e3d2daaee2e06770b0f"
},
{
"fixed": "4e646d19a4a1e0d082bd4d1f5a58ae0182a268d9"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "4.23.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "5.2.0"
},
{
"fixed": "5.3.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "4e646d19a4a1e0d082bd4d1f5a58ae0182a268d9"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
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"pocketmine-mp-rebrand"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54355.json"
}
}
],
"modified": "2026-10-28T02:30:37.860463213Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54355.json",
"https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-79rc-jjh6-rc89",
"https://nvd.nist.gov/vuln/detail/CVE-2023-54355",
"https://www.vulncheck.com/advisories/pocketmine-mp-5.2.0-server-crash-via-incorrect-ec-curve",
"https://github.com/pmmp/PocketMine-MP/commit/4e646d19a4a1e0d082bd4d1f5a58ae0182a268d9"
],
"provider_metadata": {
"cwe_ids": [
"CWE-347"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54355.json"
}
},
"related_cves": [
{
"value": "CVE-2023-54355",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 505158,
"published_at": "2026-09-09T13:31:50.013+00:00"
}