CVE-2018-20803

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, nvd
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.5Exploit: NoneExposed: 0

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

A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries, which loop indefinitely in mathematics processing while retaining locks. This issue affects MongoDB Server v4.0 versions prior to 4.0.5; MongoDB Server v3.6 versions prior to 3.6.10 and MongoDB Server v3.4 versions prior to 3.4.19.

CVSS v3
6.5
EG Score
6.5(medium)
EPSS
66.4%
KEV
Not listed

Published

November 23, 2020

Last Modified

November 21, 2024

References (2)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 49× 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. 2026-07-11 08:24 UTCEPSS rescore
  2. 2026-07-09 19:06 UTCEPSS rescore
  3. 2026-07-08 15:11 UTCEPSS rescore
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  15. 2026-06-30 23:20 UTCEPSS rescore
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  1. 2026-06-24 14:02 UTCEPSS rescore
  2. 2026-06-24 08:29 UTCOSV refresh
  3. 2026-06-23 21:30 UTCEPSS rescore
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  5. 2026-06-23 21:30 UTCEPSS rescore
  6. 2026-06-22 14:23 UTCEPSS rescore
  7. 2026-06-21 14:54 UTCEPSS rescore
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  9. 2026-06-21 01:57 UTCEPSS rescore
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  11. 2026-06-19 19:23 UTCEPSS rescore
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  22. 2026-06-13 22:58 UTCEPSS rescore
  23. 2026-06-12 23:09 UTCEPSS rescore
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  25. 2026-06-11 13:57 UTCEPSS rescore
  26. 2026-06-10 22:16 UTCEPSS rescore
  27. 2026-06-10 13:19 UTCEPSS rescore
  28. 2026-06-08 14:14 UTCEPSS rescore
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  30. 2026-06-07 15:22 UTCEPSS rescore
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  32. 2026-06-07 12:29 UTCOSV refresh
  33. 2026-06-06 13:45 UTCEPSS rescore
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  35. 2026-06-05 22:45 UTCEPSS rescore
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  39. 2026-06-04 13:10 UTCEPSS rescore
  40. 2026-06-02 20:11 UTCEPSS rescore
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  42. 2026-06-01 13:50 UTCEPSS rescore
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  44. 2026-05-31 22:29 UTCEPSS rescore
  45. 2026-05-31 00:14 UTCEPSS rescore
  46. 2026-05-31 00:14 UTCEPSS rescore
  47. 2026-05-29 13:41 UTCEPSS rescore
  48. 2026-05-28 13:42 UTCEPSS rescore
  49. 2026-05-28 13:42 UTCEPSS rescore
  50. 2026-05-27 13:38 UTCEPSS rescore
  51. 2026-05-27 13:38 UTCEPSS rescore
  52. 2026-05-26 13:42 UTCEPSS rescore
  53. 2026-05-26 13:42 UTCEPSS rescore
  54. 2026-05-26 07:17 UTCEPSS rescore
  55. 2026-05-26 07:17 UTCEPSS rescore
  56. 2026-05-23 04:57 UTCEG score recompute
  57. 2026-05-23 04:57 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2018-20803?
CVE-2018-20803 is a medium vulnerability published on November 23, 2020. A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries, which loop indefinitely in mathematics processing while retaining locks. This issue affects MongoDB Server v4.0 versions prior to 4.0.5; MongoDB Server v3.6 versions prior to 3.6.10 and…
When was CVE-2018-20803 disclosed?
CVE-2018-20803 was first published in the National Vulnerability Database on November 23, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-20803 actively exploited?
CVE-2018-20803 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 66.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-20803?
CVE-2018-20803 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2018-20803?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20803, 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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