CVE-2026-45291

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 82% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:github_m, epss
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

Cloudburst Network provides network components used within Cloudburst projects. A vulnerability in versions prior to 1.0.0.CR3-20260418.124334-32 impacts publicly accessible software depending on the affected versions of Network and allows an attacker to exploit a bug in Network to close the parent netty channel, rendering it inoperable. All consumers of the library should upgrade to at least version 1.0.0.CR3-20260418.124334-32. There are no known workarounds beyond updating the library.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
17.8%
KEV
Not listed

Published

June 5, 2026

Last Modified

June 8, 2026

Advisory Details (1)

Auto-updated Jun 6, 2026
Patch available. Sources: github.
github Patch Available

Erroneous handling of invalid connections (Cloudburst Network) · Advisory · CloudburstMC/Network · GitHub

https://github.com/CloudburstMC/Network/security/advisories/GHSA-rh6x-g5c8-2rmf

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 77× 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.

Showing the most recent 100 of 112 total refreshes for this CVE.

  1. 2026-07-15 22:42 UTCEG score recompute
  2. 2026-07-15 16:57 UTCEPSS rescore
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  75. 2026-06-08 19:06 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-45291?
CVE-2026-45291 is a high vulnerability published on June 5, 2026. Cloudburst Network provides network components used within Cloudburst projects. A vulnerability in versions prior to 1.0.0.CR3-20260418.124334-32 impacts publicly accessible software depending on the affected versions of Network and allows an attacker to exploit a bug in Network to close the parent…
When was CVE-2026-45291 disclosed?
CVE-2026-45291 was first published in the National Vulnerability Database on June 5, 2026, with the most recent update on June 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45291 actively exploited?
CVE-2026-45291 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45291?
CVE-2026-45291 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-45291?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45291, 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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