CVE-2023-54355CWE-347

CVE-2023-54355

High · published September 9, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
12.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · 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
EPSS
0.00225 · 12.4th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2026-09-09T18:17Z
References (3)
https://github.com/pmmp/PocketMine-MP/commit/4e646d19a4a1e0d082bd4d1f5a58ae0182a268d9 · [email protected]https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-79rc-jjh6-rc89 · [email protected]https://www.vulncheck.com/advisories/pocketmine-mp-5.2.0-server-crash-via-incorrect-ec-curve · [email protected]
EPSS history
Timeline
  • 11 SEP 03:12Z
    EPSS moved — → 0%
    epss
  • 09 SEP 13:31Z
    PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve
    cvelistv5