CVE-2026-82066

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 70% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

A heap out-of-bounds read security issue exists in the query planning component of MongoDB Server. An authenticated user with database read and write privileges can trigger the security issue through crafted query operations, causing the server to read memory beyond allocated buffer boundaries. The revealed memory contents may be partially observable through diagnostic query statistics output.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Sep 8, 2026
No patch confirmed yet.
generic

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https://jira.mongodb.org/browse/SERVER-131562

Vendor Advisories for CVE-2026-82066(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 26× in last 7d / 58× 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. 2026-09-25 00:06 UTCEG score recompute
  2. 2026-09-25 00:06 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-24 11:33 UTCGHSA enrichment
  5. 2026-09-23 23:24 UTCEG score recompute
  6. 2026-09-23 23:24 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 11:13 UTCGHSA enrichment
  9. 2026-09-22 23:03 UTCEG score recompute
  10. 2026-09-22 23:03 UTCGHSA enrichment
  11. 2026-09-22 16:01 UTCEPSS rescore
  12. 2026-09-22 10:53 UTCGHSA enrichment
  13. 2026-09-21 22:44 UTCEG score recompute
  14. 2026-09-21 22:44 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 10:35 UTCGHSA enrichment
  17. 2026-09-20 22:26 UTCEG score recompute
  18. 2026-09-20 22:26 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 10:16 UTCGHSA enrichment
  21. 2026-09-19 22:07 UTCEG score recompute
  22. 2026-09-19 22:07 UTCGHSA enrichment
  23. 2026-09-19 09:57 UTCGHSA enrichment
  24. 2026-09-18 21:47 UTCEG score recompute
  25. 2026-09-18 21:47 UTCGHSA enrichment
Show 33 more
  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 09:38 UTCGHSA enrichment
  3. 2026-09-17 21:29 UTCEG score recompute
  4. 2026-09-17 21:29 UTCGHSA enrichment
  5. 2026-09-17 09:19 UTCGHSA enrichment
  6. 2026-09-16 21:09 UTCEG score recompute▲ 3.80
  7. 2026-09-16 21:09 UTCGHSA enrichment
  8. 2026-09-16 20:45 UTCNVD updateCVSS v3 → 8.1 · severity → HIGH
  9. 2026-09-16 18:31 UTCEG score recompute
  10. 2026-09-16 18:31 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-15 18:41 UTCEG score recompute
  14. 2026-09-15 18:41 UTCGHSA enrichment
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-14 18:45 UTCGHSA enrichment
  18. 2026-09-13 18:54 UTCEG score recompute
  19. 2026-09-13 18:54 UTCGHSA enrichment
  20. 2026-09-12 19:05 UTCEG score recompute
  21. 2026-09-12 19:05 UTCGHSA enrichment
  22. 2026-09-11 19:16 UTCEG score recompute
  23. 2026-09-11 19:16 UTCGHSA enrichment
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-11 14:53 UTCEPSS rescore
  26. 2026-09-10 19:27 UTCEG score recompute
  27. 2026-09-10 19:27 UTCGHSA enrichment
  28. 2026-09-09 19:37 UTCGHSA enrichment
  29. 2026-09-08 19:49 UTCEG score recompute
  30. 2026-09-08 19:49 UTCGHSA enrichment
  31. 2026-09-08 18:13 UTCEG score recompute
  32. 2026-09-08 16:28 UTCEG score recompute
  33. 2026-09-08 16:25 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82066?
CVE-2026-82066 is a high vulnerability published on September 8, 2026. A heap out-of-bounds read security issue exists in the query planning component of MongoDB Server. An authenticated user with database read and write privileges can trigger the security issue through crafted query operations, causing the server to read memory beyond allocated buffer boundaries. The…
When was CVE-2026-82066 disclosed?
CVE-2026-82066 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82066 actively exploited?
CVE-2026-82066 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 69.9% of all scored CVEs.
What is the CVSS score of CVE-2026-82066?
CVE-2026-82066 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-82066?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82066, 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.

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