CVE-2023-54355
PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve
- State
- Published
- Severity
- 8.7 High
- Published
- Sep 9, 2026
- Updated
- Oct 8, 2026
- Reserved
- Jan 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-347 Improper Verification of Cryptographic Signature
Affected Products
| Product | Versions |
|---|---|
PocketMine-MPpmmp |
|
References
- GitHub Security Advisory (GHSA-79rc-jjh6-rc89)vendor-advisory
- Patch Commitpatch
- VulnCheck Advisory: PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curvethird-party-advisory
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