CVE-2023-54355

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-09. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 10, 2026

Advisory Details (3)

Auto-updated Sep 9, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
generic

PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve | Advisories | VulnCheck

https://www.vulncheck.com/advisories/pocketmine-mp-5.2.0-server-crash-via-incorrect-ec-curve
github_commit

commit 4e646d19a4a1 (pmmp/PocketMine-MP)

Fix landed in pmmp/PocketMine-MP commit 4e646d19a4a1 — awaiting tagged release

https://github.com/pmmp/PocketMine-MP/commit/4e646d19a4a1e0d082bd4d1f5a58ae0182a268d9
github Patch Available🟡 PoC Available

Server crash due to incorrect EC curve used for LoginPacket identityPublicKey · Advisory · pmmp/PocketMine-MP · GitHub

Affected: 4.23.1 and 5.3.1 in the following commit:

https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-79rc-jjh6-rc89

Vendor Advisories for CVE-2023-54355(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
pocketmine/pocketmine-mp5.2.0, 5.2.1, 5.3.05.3.1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 26× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 07:13 UTCEG score recompute
  2. 2026-09-19 07:13 UTCGHSA enrichment
  3. 2026-09-18 19:26 UTCEPSS rescore
  4. 2026-09-18 18:17 UTCGHSA enrichment
  5. 2026-09-18 05:08 UTCEG score recompute
  6. 2026-09-18 05:08 UTCGHSA enrichment
  7. 2026-09-17 16:12 UTCGHSA enrichment
  8. 2026-09-17 03:15 UTCGHSA enrichment
  9. 2026-09-16 14:19 UTCEG score recompute
  10. 2026-09-16 14:19 UTCGHSA enrichment
  11. 2026-09-16 14:06 UTCEPSS rescore
  12. 2026-09-16 05:11 UTCEPSS rescore
  13. 2026-09-16 05:11 UTCEPSS rescore
  14. 2026-09-16 01:22 UTCGHSA enrichment
  15. 2026-09-15 12:25 UTCEG score recompute
  16. 2026-09-15 12:25 UTCGHSA enrichment
  17. 2026-09-15 03:08 UTCEPSS rescore
  18. 2026-09-14 23:29 UTCGHSA enrichment
  19. 2026-09-14 10:04 UTCGHSA enrichment
  20. 2026-09-13 21:08 UTCEG score recompute
  21. 2026-09-13 21:08 UTCGHSA enrichment
  22. 2026-09-13 16:45 UTCEPSS rescore
  23. 2026-09-13 08:11 UTCGHSA enrichment
  24. 2026-09-12 19:15 UTCEG score recompute
  25. 2026-09-12 19:15 UTCGHSA enrichment
Show 17 more
  1. 2026-09-12 14:58 UTCEPSS rescore
  2. 2026-09-12 06:19 UTCGHSA enrichment
  3. 2026-09-11 17:23 UTCEG score recompute
  4. 2026-09-11 17:23 UTCGHSA enrichment
  5. 2026-09-11 14:51 UTCEPSS rescore
  6. 2026-09-11 09:34 UTCEPSS rescore
  7. 2026-09-11 04:18 UTCGHSA enrichment
  8. 2026-09-10 15:22 UTCEG score recompute
  9. 2026-09-10 15:22 UTCGHSA enrichment
  10. 2026-09-10 15:00 UTCEG score recompute
  11. 2026-09-10 15:00 UTCGHSA enrichment
  12. 2026-09-10 09:40 UTCGHSA enrichment
  13. 2026-09-09 20:44 UTCEG score recompute
  14. 2026-09-09 20:44 UTCGHSA enrichment
  15. 2026-09-09 14:27 UTCEG score recompute
  16. 2026-09-09 13:37 UTCEG score recompute
  17. 2026-09-09 13:34 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2023-54355?
CVE-2023-54355 is a high vulnerability published on September 9, 2026. 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…
When was CVE-2023-54355 disclosed?
CVE-2023-54355 was first published in the National Vulnerability Database on September 9, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-54355 actively exploited?
CVE-2023-54355 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 86.6% of all scored CVEs.
What is the CVSS score of CVE-2023-54355?
CVE-2023-54355 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2023-54355?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-54355, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-54355

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