CVE-2023-54395

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-09-09. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: 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 4.12.5 contain a denial-of-service vulnerability in ModalFormResponsePacket processing that allows attackers to cause server resource exhaustion by sending large JSON payloads. Attackers can send numerous oversized modal form response packets to consume CPU time and prevent the server from processing legitimate connections.

CVSS v3
4.3
EG Score
4.3(high)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
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 before 4.12.5 Denial of Service via ModalFormResponsePacket | Advisories | VulnCheck

https://www.vulncheck.com/advisories/pocketmine-mp-before-4.12.5-denial-of-service-via-modalformresponsepacket
github_commit

commit 3baa5ab71214 (pmmp/PocketMine-MP)

Fix landed in pmmp/PocketMine-MP commit 3baa5ab71214 — awaiting tagged release

https://github.com/pmmp/PocketMine-MP/commit/3baa5ab71214f96e6e7ab12cb9beef08118473b5
github Patch Available🟡 PoC Available

Denial-of-service by sending large modal form responses · Advisory · pmmp/PocketMine-MP · GitHub

https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-7m9r-rq9j-wmmh

Vendor Advisories for CVE-2023-54395(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 ... 4.9.1 (226 versions)4.12.5—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 36× 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 05:14 UTCEG score recompute
  2. 2026-09-19 05:14 UTCGHSA enrichment
  3. 2026-09-18 19:26 UTCEPSS rescore
  4. 2026-09-18 06:28 UTCEG score recompute
  5. 2026-09-18 06:28 UTCGHSA enrichment
  6. 2026-09-17 07:41 UTCEG score recompute
  7. 2026-09-17 07:41 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 09:15 UTCEG score recompute
  14. 2026-09-15 09:15 UTCGHSA enrichment
  15. 2026-09-15 03:08 UTCEPSS rescore
  16. 2026-09-14 10:28 UTCEG score recompute
  17. 2026-09-14 10:28 UTCGHSA enrichment
  18. 2026-09-13 16:45 UTCEPSS rescore
  19. 2026-09-13 11:42 UTCEG score recompute
  20. 2026-09-13 11:42 UTCGHSA enrichment
  21. 2026-09-12 14:58 UTCEPSS rescore
  22. 2026-09-12 12:56 UTCEG score recompute
  23. 2026-09-12 12:56 UTCGHSA enrichment
  24. 2026-09-11 14:51 UTCEPSS rescore
  25. 2026-09-11 14:09 UTCEG score recompute
Show 11 more
  1. 2026-09-11 14:09 UTCGHSA enrichment
  2. 2026-09-11 09:34 UTCEPSS rescore
  3. 2026-09-10 15:22 UTCEG score recompute
  4. 2026-09-10 15:22 UTCGHSA enrichment
  5. 2026-09-10 15:00 UTCEG score recompute
  6. 2026-09-10 15:00 UTCGHSA enrichment
  7. 2026-09-09 20:44 UTCEG score recompute
  8. 2026-09-09 20:43 UTCGHSA enrichment
  9. 2026-09-09 14:27 UTCEG score recompute
  10. 2026-09-09 13:36 UTCEG score recompute
  11. 2026-09-09 13:34 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2023-54395?
CVE-2023-54395 is a medium vulnerability published on September 9, 2026. PocketMine-MP versions before 4.12.5 contain a denial-of-service vulnerability in ModalFormResponsePacket processing that allows attackers to cause server resource exhaustion by sending large JSON payloads. Attackers can send numerous oversized modal form response packets to consume CPU time and…
When was CVE-2023-54395 disclosed?
CVE-2023-54395 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-2023-54395 actively exploited?
CVE-2023-54395 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 73.6% of all scored CVEs.
What is the CVSS score of CVE-2023-54395?
CVE-2023-54395 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2023-54395?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-54395, 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-2023-54395

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