CVE-2023-54390

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 contain a denial of service vulnerability in LoginPacket JSON parsing due to improper null value handling in arrays. Attackers can send malformed JSON with unexpected null elements in LoginPacket to crash 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
27%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 9, 2026

Advisory Details (2)

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

PocketMine-MP before 5.3.1 Denial of Service via LoginPacket | Advisories | VulnCheck

https://www.vulncheck.com/advisories/pocketmine-mp-before-5.3.1-denial-of-service-via-loginpacket
github Patch Available🟡 PoC Available

Crash when handling unexpected `NULL` values in JSON arrays in `LoginPacket` · Advisory · pmmp/PocketMine-MP · GitHub

Affected: 5.3.1 and 4.23.1 by updating JsonMapper to include the following commit:

https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-92jh-gwch-jq38

Vendor Advisories for CVE-2023-54390(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-mp5.0.0 ... 5.3.0 (9 versions)5.3.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 28× in last 7d / 40× 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 02:37 UTCEG score recompute
  2. 2026-09-19 02:37 UTCGHSA enrichment
  3. 2026-09-18 19:26 UTCEPSS rescore
  4. 2026-09-18 14:17 UTCGHSA enrichment
  5. 2026-09-18 01:57 UTCEG score recompute
  6. 2026-09-18 01:57 UTCGHSA enrichment
  7. 2026-09-17 13:38 UTCGHSA enrichment
  8. 2026-09-17 01:19 UTCEG score recompute
  9. 2026-09-17 01:19 UTCGHSA enrichment
  10. 2026-09-16 14:06 UTCEPSS rescore
  11. 2026-09-16 13:00 UTCEG score recompute
  12. 2026-09-16 12:59 UTCGHSA enrichment
  13. 2026-09-16 05:11 UTCEPSS rescore
  14. 2026-09-16 05:11 UTCEPSS rescore
  15. 2026-09-16 00:41 UTCGHSA enrichment
  16. 2026-09-15 12:15 UTCEG score recompute
  17. 2026-09-15 12:14 UTCGHSA enrichment
  18. 2026-09-15 03:08 UTCEPSS rescore
  19. 2026-09-14 23:54 UTCGHSA enrichment
  20. 2026-09-14 11:35 UTCGHSA enrichment
  21. 2026-09-13 23:16 UTCEG score recompute
  22. 2026-09-13 23:16 UTCGHSA enrichment
  23. 2026-09-13 16:45 UTCEPSS rescore
  24. 2026-09-13 10:57 UTCGHSA enrichment
  25. 2026-09-12 22:38 UTCEG score recompute
Show 15 more
  1. 2026-09-12 22:38 UTCGHSA enrichment
  2. 2026-09-12 14:58 UTCEPSS rescore
  3. 2026-09-12 10:19 UTCGHSA enrichment
  4. 2026-09-11 22:00 UTCGHSA enrichment
  5. 2026-09-11 09:41 UTCEG score recompute
  6. 2026-09-11 09:41 UTCGHSA enrichment
  7. 2026-09-11 09:34 UTCEPSS rescore
  8. 2026-09-10 21:22 UTCGHSA enrichment
  9. 2026-09-10 09:03 UTCGHSA enrichment
  10. 2026-09-09 20:44 UTCEG score recompute
  11. 2026-09-09 20:44 UTCGHSA enrichment
  12. 2026-09-09 15:29 UTCEG score recompute
  13. 2026-09-09 14:20 UTCEG score recompute
  14. 2026-09-09 13:36 UTCEG score recompute
  15. 2026-09-09 13:34 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2023-54390?
CVE-2023-54390 is a high vulnerability published on September 9, 2026. PocketMine-MP versions before 5.3.1 and 4.23.1 contain a denial of service vulnerability in LoginPacket JSON parsing due to improper null value handling in arrays. Attackers can send malformed JSON with unexpected null elements in LoginPacket to crash the server.
When was CVE-2023-54390 disclosed?
CVE-2023-54390 was first published in the National Vulnerability Database on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-54390 actively exploited?
CVE-2023-54390 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 72.6% of all scored CVEs.
What is the CVSS score of CVE-2023-54390?
CVE-2023-54390 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2023-54390?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-54390, 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-2023-54390

Explore →

Is Your Infrastructure Affected by CVE-2023-54390?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs