CVE-2026-82300

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-09-26. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 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: 0.4%CVSS: 6.5Exploit: None knownExposed services: Not assessed

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

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130).

CVSS v3
6.5
EG Score
6.5MEDIUMhigh confidence
EG Risk
29
EG Risk 29/100CISA SSVC

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%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
34th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 26, 2026

Last Modified

October 1, 2026

Advisory Details (1)

Auto-updated Sep 26, 2026
No patch confirmed yet.
generic

Elasticsearch 8.19.22, 9.4.7, 9.5.4 Security Update (ESA-2026-176) - Security Announcements - Discuss the Elastic Stack

https://discuss.elastic.co/t/elasticsearch-8-19-22-9-4-7-9-5-4-security-update-esa-2026-176/390682

Vendor Advisories for CVE-2026-82300(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.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 31× in last 7d / 37× 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. 2026-10-04 13:09 UTCEG score recompute
  2. 2026-10-04 13:09 UTCVendor advisory
  3. 2026-10-04 13:09 UTCGHSA enrichment
  4. 2026-10-03 14:26 UTCEPSS rescore
  5. 2026-10-03 13:13 UTCEG score recompute
  6. 2026-10-03 13:13 UTCVendor advisory
  7. 2026-10-03 13:13 UTCGHSA enrichment
  8. 2026-10-02 17:57 UTCEPSS rescore
  9. 2026-10-02 13:16 UTCEG score recompute
  10. 2026-10-02 13:16 UTCVendor advisory
  11. 2026-10-02 13:16 UTCGHSA enrichment
  12. 2026-10-01 19:50 UTCEPSS rescore
  13. 2026-10-01 13:19 UTCEG score recompute
  14. 2026-10-01 13:19 UTCVendor advisory
  15. 2026-10-01 13:19 UTCGHSA enrichment
  16. 2026-10-01 13:06 UTCEG score recompute
  17. 2026-10-01 13:06 UTCVendor advisory
  18. 2026-10-01 13:06 UTCGHSA enrichment
  19. 2026-09-30 18:47 UTCEG score recompute
  20. 2026-09-30 18:47 UTCGHSA enrichment
  21. 2026-09-30 15:04 UTCEPSS rescore
  22. 2026-09-29 18:49 UTCVendor advisory
  23. 2026-09-29 18:48 UTCGHSA enrichment
  24. 2026-09-29 16:46 UTCEG score recompute
  25. 2026-09-29 16:46 UTCVendor advisory
Show 12 more
  1. 2026-09-29 16:46 UTCGHSA enrichment
  2. 2026-09-28 16:38 UTCEG score recompute
  3. 2026-09-28 16:38 UTCGHSA enrichment
  4. 2026-09-28 13:52 UTCEPSS rescore
  5. 2026-09-27 23:14 UTCEG score recompute
  6. 2026-09-27 23:14 UTCGHSA enrichment
  7. 2026-09-27 13:48 UTCEPSS rescore
  8. 2026-09-26 23:17 UTCEG score recompute
  9. 2026-09-26 23:16 UTCGHSA enrichment
  10. 2026-09-26 21:22 UTCEG score recompute
  11. 2026-09-26 20:49 UTCEG score recompute
  12. 2026-09-26 20:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82300?
CVE-2026-82300 is a medium vulnerability published on September 26, 2026. Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130).
When was CVE-2026-82300 disclosed?
CVE-2026-82300 was first published on September 26, 2026, with the most recent update on October 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82300 actively exploited?
CVE-2026-82300 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (34th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-82300?
CVE-2026-82300 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-82300?
No fix for CVE-2026-82300 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-82300 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-82300

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