CVE-2023-54396

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-09. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: 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 4.8.1 fail to validate dye color IDs in banner NBT data during deserialization. Attackers can provide invalid color values in inventory transactions or via commands to trigger undefined offset errors and crash the server.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 9, 2026

Advisory Details (3)

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

PocketMine-MP before 4.8.1 Server Crash via Banner NBT | Advisories | VulnCheck

https://www.vulncheck.com/advisories/pocketmine-mp-before-4.8.1-server-crash-via-banner-nbt
github_commit

commit 08b9495bce2d (pmmp/PocketMine-MP)

Fix landed in pmmp/PocketMine-MP commit 08b9495bce2d — awaiting tagged release

https://github.com/pmmp/PocketMine-MP/commit/08b9495bce2d65a6d1d3eeb76e484499a00765eb
github Patch Available🟡 PoC Available

Improperly handled dye colour IDs in banner NBT leading to server crash · Advisory · pmmp/PocketMine-MP · GitHub

https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-wqqv-jcfr-9f5g

Vendor Advisories for CVE-2023-54396(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-mp3.0.0 ... 4.8.0 (212 versions)4.8.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 33× 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 03:30 UTCEG score recompute
  2. 2026-09-19 03:29 UTCGHSA enrichment
  3. 2026-09-18 19:26 UTCEPSS rescore
  4. 2026-09-18 05:17 UTCEG score recompute
  5. 2026-09-18 05:17 UTCGHSA enrichment
  6. 2026-09-17 07:06 UTCEG score recompute
  7. 2026-09-17 07:06 UTCGHSA enrichment
  8. 2026-09-16 14:06 UTCEPSS rescore
  9. 2026-09-16 08:54 UTCEG score recompute
  10. 2026-09-16 08:54 UTCGHSA enrichment
  11. 2026-09-16 05:11 UTCEPSS rescore
  12. 2026-09-16 05:11 UTCEPSS rescore
  13. 2026-09-15 10:09 UTCEG score recompute
  14. 2026-09-15 10:09 UTCGHSA enrichment
  15. 2026-09-15 03:08 UTCEPSS rescore
  16. 2026-09-14 11:56 UTCEG score recompute
  17. 2026-09-14 11:56 UTCGHSA enrichment
  18. 2026-09-13 16:45 UTCEPSS rescore
  19. 2026-09-13 13:45 UTCGHSA enrichment
  20. 2026-09-12 15:34 UTCEG score recompute
  21. 2026-09-12 15:34 UTCGHSA enrichment
  22. 2026-09-12 14:58 UTCEPSS rescore
  23. 2026-09-11 17:23 UTCEG score recompute
  24. 2026-09-11 17:23 UTCGHSA enrichment
  25. 2026-09-11 14:51 UTCEPSS rescore
Show 8 more
  1. 2026-09-11 09:34 UTCEPSS rescore
  2. 2026-09-10 18:55 UTCGHSA enrichment
  3. 2026-09-09 20:44 UTCEG score recompute
  4. 2026-09-09 20:43 UTCGHSA enrichment
  5. 2026-09-09 15:29 UTCEG score recompute
  6. 2026-09-09 14:20 UTCEG score recompute
  7. 2026-09-09 13:36 UTCEG score recompute
  8. 2026-09-09 13:34 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-54396?
CVE-2023-54396 is a medium vulnerability published on September 9, 2026. PocketMine-MP versions before 4.8.1 fail to validate dye color IDs in banner NBT data during deserialization. Attackers can provide invalid color values in inventory transactions or via commands to trigger undefined offset errors and crash the server.
When was CVE-2023-54396 disclosed?
CVE-2023-54396 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-2023-54396 actively exploited?
CVE-2023-54396 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 68.5% of all scored CVEs.
What is the CVSS score of CVE-2023-54396?
CVE-2023-54396 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2023-54396?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-54396, 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-2023-54396

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