CVE-2026-86198

MEDIUMPre-NVD 4.24.2—
EchelonGraph scoreHIGH confidence

Score 4.2 from GitHub Security Advisory (severity: LOW) published 2026-09-09. a secondary CVSS source baseline 4.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.2Exploit: 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 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.

CVSS v3
4.2
EG Score
4.2(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
Severity42% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
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 5.44.2 Denial of Service via ResourcePackClientResponsePacket | Advisories | VulnCheck

https://www.vulncheck.com/advisories/pocketmine-mp-before-5.44.2-denial-of-service-via-resourcepackclientresponsepacket
github_commit

commit 7a27894146a0 (pmmp/PocketMine-MP)

Fix landed in pmmp/PocketMine-MP commit 7a27894146a0 — awaiting tagged release

https://github.com/pmmp/PocketMine-MP/commit/7a27894146a04964ab628ed9033140fdbf887ff3
github Patch Available🟡 PoC Available

Improper handling of async conditions in ResourcePackClientResponsePacket STATUS_COMPLETED handling · Advisory · pmmp/PocketMine-MP · GitHub

https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-pg53-p7qp-65cv

Vendor Advisories for CVE-2026-86198(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 32× 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. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 13:17 UTCEG score recompute
  3. 2026-09-18 13:17 UTCGHSA enrichment
  4. 2026-09-17 19:32 UTCEPSS rescore
  5. 2026-09-17 13:35 UTCEG score recompute
  6. 2026-09-17 13:35 UTCGHSA enrichment
  7. 2026-09-16 14:09 UTCEPSS rescore
  8. 2026-09-16 13:53 UTCEG score recompute
  9. 2026-09-16 13:53 UTCGHSA enrichment
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-15 13:52 UTCEG score recompute
  12. 2026-09-15 13:52 UTCGHSA enrichment
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-14 14:10 UTCEG score recompute
  16. 2026-09-14 14:10 UTCGHSA enrichment
  17. 2026-09-13 14:28 UTCEG score recompute
  18. 2026-09-13 14:28 UTCGHSA enrichment
  19. 2026-09-12 14:46 UTCGHSA enrichment
  20. 2026-09-11 15:04 UTCEG score recompute
  21. 2026-09-11 15:04 UTCGHSA enrichment
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-10 15:22 UTCEG score recompute
  25. 2026-09-10 15:22 UTCGHSA enrichment
Show 7 more
  1. 2026-09-10 15:00 UTCEG score recompute
  2. 2026-09-10 15:00 UTCGHSA enrichment
  3. 2026-09-09 20:41 UTCEG score recompute
  4. 2026-09-09 20:41 UTCGHSA enrichment
  5. 2026-09-09 14:27 UTCEG score recompute
  6. 2026-09-09 13:46 UTCEG score recompute
  7. 2026-09-09 13:44 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-86198?
CVE-2026-86198 is a medium vulnerability published on September 9, 2026. PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player…
When was CVE-2026-86198 disclosed?
CVE-2026-86198 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-2026-86198 actively exploited?
CVE-2026-86198 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 79.3% of all scored CVEs.
What is the CVSS score of CVE-2026-86198?
CVE-2026-86198 has a CVSS v3 base score of 4.2 (NVD).
How do I remediate CVE-2026-86198?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86198, 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

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