CVE-2026-82059

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 82% 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 — 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%CVSS: 6.5Exploit: None knownExposed: 0

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

An internal aggregation expression in MongoDB Server was incorrectly registered as accessible to any authenticated user rather than being restricted to internal cluster operations. By crafting a malformed index specification within this expression, an authenticated user with read-only privileges could trigger an assertion failure in the index key generation code path. In certain build configurations, this assertion failure results in termination of the mongod process, causing a denial of service to all connected clients.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
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-130571

Vendor Advisories for CVE-2026-82059(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 21× in last 7d / 35× 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 19:45 UTCEG score recompute
  2. 2026-09-19 19:45 UTCGHSA enrichment
  3. 2026-09-18 20:15 UTCEG score recompute
  4. 2026-09-18 20:15 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-17 20:39 UTCEG score recompute
  7. 2026-09-17 20:39 UTCGHSA enrichment
  8. 2026-09-16 21:09 UTCEG score recompute▲ 1.20
  9. 2026-09-16 21:09 UTCGHSA enrichment
  10. 2026-09-16 20:38 UTCNVD updateCVSS v3 → 6.5
  11. 2026-09-16 15:48 UTCEG score recompute
  12. 2026-09-16 15:48 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 16:19 UTCEG score recompute
  16. 2026-09-15 16:19 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 16:48 UTCGHSA enrichment
  20. 2026-09-13 17:19 UTCEG score recompute
  21. 2026-09-13 17:19 UTCGHSA enrichment
  22. 2026-09-12 17:50 UTCEG score recompute
  23. 2026-09-12 17:50 UTCGHSA enrichment
  24. 2026-09-11 18:21 UTCEG score recompute
  25. 2026-09-11 18:21 UTCGHSA enrichment
Show 10 more
  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-10 18:51 UTCEG score recompute
  4. 2026-09-10 18:51 UTCGHSA enrichment
  5. 2026-09-09 19:19 UTCGHSA enrichment
  6. 2026-09-08 19:49 UTCEG score recompute
  7. 2026-09-08 19:49 UTCGHSA enrichment
  8. 2026-09-08 18:14 UTCEG score recompute
  9. 2026-09-08 16:29 UTCEG score recompute
  10. 2026-09-08 16:25 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-82059?
CVE-2026-82059 is a medium vulnerability published on September 8, 2026. An internal aggregation expression in MongoDB Server was incorrectly registered as accessible to any authenticated user rather than being restricted to internal cluster operations. By crafting a malformed index specification within this expression, an authenticated user with read-only privileges…
When was CVE-2026-82059 disclosed?
CVE-2026-82059 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-2026-82059 actively exploited?
CVE-2026-82059 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 82.1% of all scored CVEs.
What is the CVSS score of CVE-2026-82059?
CVE-2026-82059 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-82059?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82059, 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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