CVE-2026-81518

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-29. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

When mongosqld is configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one, so a client that presents no certificate is still accepted. In deployments that rely on client certificates as the sole means of identifying users, a remote party with network access to the listener can therefore establish a session and read the MongoDB data exposed through the connector.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

August 28, 2026

Last Modified

September 1, 2026

Advisory Details (1)

Auto-updated Aug 28, 2026
No patch confirmed yet.
generic

Release Notes for MongoDB Connector for BI - BI Connector - MongoDB Docs

https://www.mongodb.com/docs/bi-connector/current/release-notes/

Vendor Advisories for CVE-2026-81518(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 27× in last 7d / 86× 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. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 11:56 UTCGHSA enrichment
  3. 2026-09-19 23:35 UTCEG score recompute
  4. 2026-09-19 23:35 UTCGHSA enrichment
  5. 2026-09-19 11:43 UTCGHSA enrichment
  6. 2026-09-18 23:47 UTCEG score recompute
  7. 2026-09-18 23:47 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-18 11:52 UTCGHSA enrichment
  10. 2026-09-18 00:00 UTCEG score recompute
  11. 2026-09-18 00:00 UTCGHSA enrichment
  12. 2026-09-17 11:05 UTCGHSA enrichment
  13. 2026-09-16 23:12 UTCEG score recompute
  14. 2026-09-16 23:12 UTCGHSA enrichment
  15. 2026-09-16 14:08 UTCEPSS rescore
  16. 2026-09-16 11:20 UTCEG score recompute
  17. 2026-09-16 11:20 UTCGHSA enrichment
  18. 2026-09-16 05:15 UTCEPSS rescore
  19. 2026-09-15 23:28 UTCGHSA enrichment
  20. 2026-09-15 11:28 UTCEG score recompute
  21. 2026-09-15 11:28 UTCGHSA enrichment
  22. 2026-09-15 03:12 UTCEPSS rescore
  23. 2026-09-15 03:12 UTCEPSS rescore
  24. 2026-09-14 23:36 UTCGHSA enrichment
  25. 2026-09-14 11:03 UTCGHSA enrichment
Show 61 more
  1. 2026-09-13 23:11 UTCEG score recompute
  2. 2026-09-13 23:11 UTCGHSA enrichment
  3. 2026-09-13 11:19 UTCGHSA enrichment
  4. 2026-09-12 23:27 UTCEG score recompute
  5. 2026-09-12 23:27 UTCGHSA enrichment
  6. 2026-09-12 11:35 UTCGHSA enrichment
  7. 2026-09-11 23:43 UTCGHSA enrichment
  8. 2026-09-11 11:50 UTCEG score recompute
  9. 2026-09-11 11:50 UTCGHSA enrichment
  10. 2026-09-10 23:58 UTCGHSA enrichment
  11. 2026-09-10 12:05 UTCEG score recompute
  12. 2026-09-10 12:05 UTCGHSA enrichment
  13. 2026-09-10 00:12 UTCGHSA enrichment
  14. 2026-09-09 12:19 UTCGHSA enrichment
  15. 2026-09-09 00:26 UTCEG score recompute
  16. 2026-09-09 00:26 UTCGHSA enrichment
  17. 2026-09-08 22:01 UTCEPSS rescore
  18. 2026-09-08 07:49 UTCGHSA enrichment
  19. 2026-09-07 19:55 UTCEG score recompute
  20. 2026-09-07 19:55 UTCGHSA enrichment
  21. 2026-09-07 08:02 UTCGHSA enrichment
  22. 2026-09-06 20:07 UTCEG score recompute
  23. 2026-09-06 20:07 UTCGHSA enrichment
  24. 2026-09-06 13:48 UTCEPSS rescore
  25. 2026-09-06 08:10 UTCGHSA enrichment
  26. 2026-09-05 20:18 UTCGHSA enrichment
  27. 2026-09-05 08:25 UTCGHSA enrichment
  28. 2026-09-04 20:32 UTCEG score recompute
  29. 2026-09-04 20:32 UTCGHSA enrichment
  30. 2026-09-04 08:32 UTCEG score recompute
  31. 2026-09-04 08:32 UTCGHSA enrichment
  32. 2026-09-04 05:07 UTCEPSS rescore
  33. 2026-09-03 20:39 UTCGHSA enrichment
  34. 2026-09-03 08:47 UTCGHSA enrichment
  35. 2026-09-02 20:54 UTCEG score recompute
  36. 2026-09-02 20:54 UTCGHSA enrichment
  37. 2026-09-02 14:12 UTCEPSS rescore
  38. 2026-09-02 09:02 UTCGHSA enrichment
  39. 2026-09-01 21:10 UTCGHSA enrichment
  40. 2026-09-01 19:37 UTCEG score recompute
  41. 2026-09-01 19:36 UTCGHSA enrichment
  42. 2026-09-01 13:54 UTCEPSS rescore
  43. 2026-09-01 07:23 UTCGHSA enrichment
  44. 2026-08-31 19:30 UTCEG score recompute
  45. 2026-08-31 19:30 UTCGHSA enrichment
  46. 2026-08-31 18:56 UTCEG score recompute
  47. 2026-08-31 18:56 UTCGHSA enrichment
  48. 2026-08-31 10:10 UTCGHSA enrichment
  49. 2026-08-30 22:15 UTCEG score recompute
  50. 2026-08-30 22:15 UTCGHSA enrichment
  51. 2026-08-30 19:18 UTCEPSS rescore
  52. 2026-08-30 19:17 UTCEPSS rescore
  53. 2026-08-30 10:23 UTCEG score recompute
  54. 2026-08-30 10:23 UTCGHSA enrichment
  55. 2026-08-30 01:22 UTCEPSS rescore
  56. 2026-08-29 22:29 UTCGHSA enrichment
  57. 2026-08-29 10:37 UTCEG score recompute
  58. 2026-08-29 10:37 UTCGHSA enrichment
  59. 2026-08-28 22:43 UTCEG score recompute
  60. 2026-08-28 22:02 UTCEG score recompute
  61. 2026-08-28 21:59 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81518?
CVE-2026-81518 is a high vulnerability published on August 28, 2026. When mongosqld is configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one, so a client that presents no certificate is still accepted. In deployments that rely on client certificates as the sole means of…
When was CVE-2026-81518 disclosed?
CVE-2026-81518 was first published in the National Vulnerability Database on August 28, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81518 actively exploited?
CVE-2026-81518 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 94.9% of all scored CVEs.
What is the CVSS score of CVE-2026-81518?
CVE-2026-81518 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-81518?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81518, 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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