CVE-2026-81034

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-26. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
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: Elevated riskExposed: 0

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

Netmaker disables certificate verification on the connection to the configured mail server. The sender in pro/email/smtp.go assigns a TLS configuration whose skip-verify field is set to true unconditionally, directly beneath a comment stating that the setting should be false in production. No configuration value governs it and no code path restores verification, so the client accepts any certificate the mail server presents, including one an interposing party supplies. Mail that Netmaker sends over that connection includes password-reset messages carrying single-use tokens and user invitations carrying enrolment links, so a party positioned on the path between the server and its mail relay can read those messages in transit and use a captured reset token before the intended recipient does. The setting is absent from the development branch but present in the latest release.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

August 26, 2026

Last Modified

August 26, 2026

Advisory Details (4)

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

Netmaker through 1.6.0 Improper Certificate Validation in SMTP Client | Advisories | VulnCheck

https://www.vulncheck.com/advisories/netmaker-through-1.6.0-improper-certificate-validation-in-smtp-client
generic

netmaker/pro/email/smtp.go at v1.6.0 · gravitl/netmaker · GitHub

https://github.com/gravitl/netmaker/blob/v1.6.0/pro/email/smtp.go
generic

[Bug]: Hardcoded InsecureSkipVerify in SMTP Client · Issue #4062 · gravitl/netmaker · GitHub

https://github.com/gravitl/netmaker/issues/4062
generic

GitHub - gravitl/netmaker: Netmaker makes networks with WireGuard. Netmaker automates fast, secure, and distributed virtual networks. · GitHub

https://github.com/gravitl/netmaker

Vendor Advisories for CVE-2026-81034(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 19× in last 7d / 69× 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 17:43 UTCGHSA enrichment
  3. 2026-09-19 16:05 UTCEG score recompute
  4. 2026-09-19 16:05 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 14:36 UTCEG score recompute
  7. 2026-09-18 14:36 UTCGHSA enrichment
  8. 2026-09-17 13:06 UTCEG score recompute
  9. 2026-09-17 13:06 UTCGHSA enrichment
  10. 2026-09-16 14:08 UTCEPSS rescore
  11. 2026-09-16 11:20 UTCEG score recompute
  12. 2026-09-16 11:20 UTCGHSA enrichment
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-15 09:51 UTCEG score recompute
  15. 2026-09-15 09:51 UTCGHSA enrichment
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-14 08:21 UTCEG score recompute
  19. 2026-09-14 08:21 UTCGHSA enrichment
  20. 2026-09-13 06:52 UTCEG score recompute
  21. 2026-09-13 06:52 UTCGHSA enrichment
  22. 2026-09-12 05:17 UTCEG score recompute
  23. 2026-09-12 05:17 UTCGHSA enrichment
  24. 2026-09-11 03:47 UTCEG score recompute
  25. 2026-09-11 03:47 UTCGHSA enrichment
Show 44 more
  1. 2026-09-10 02:17 UTCGHSA enrichment
  2. 2026-09-09 00:48 UTCEG score recompute
  3. 2026-09-09 00:48 UTCGHSA enrichment
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-07 15:09 UTCEG score recompute
  6. 2026-09-07 15:09 UTCGHSA enrichment
  7. 2026-09-06 13:48 UTCEPSS rescore
  8. 2026-09-06 12:11 UTCEG score recompute
  9. 2026-09-06 12:11 UTCGHSA enrichment
  10. 2026-09-05 15:31 UTCEPSS rescore
  11. 2026-09-05 10:37 UTCEG score recompute
  12. 2026-09-05 10:37 UTCGHSA enrichment
  13. 2026-09-04 09:04 UTCEG score recompute
  14. 2026-09-04 09:04 UTCGHSA enrichment
  15. 2026-09-04 05:07 UTCEPSS rescore
  16. 2026-09-03 07:35 UTCEG score recompute
  17. 2026-09-03 07:35 UTCGHSA enrichment
  18. 2026-09-02 14:12 UTCEPSS rescore
  19. 2026-09-02 06:02 UTCEG score recompute
  20. 2026-09-02 06:02 UTCGHSA enrichment
  21. 2026-09-01 13:54 UTCEPSS rescore
  22. 2026-09-01 04:40 UTCEPSS rescore
  23. 2026-09-01 04:40 UTCEPSS rescore
  24. 2026-09-01 04:32 UTCGHSA enrichment
  25. 2026-08-31 02:57 UTCEG score recompute
  26. 2026-08-31 02:56 UTCGHSA enrichment
  27. 2026-08-30 19:18 UTCEPSS rescore
  28. 2026-08-30 19:17 UTCEPSS rescore
  29. 2026-08-30 01:27 UTCEG score recompute
  30. 2026-08-30 01:27 UTCGHSA enrichment
  31. 2026-08-30 01:22 UTCEPSS rescore
  32. 2026-08-28 23:57 UTCEG score recompute
  33. 2026-08-28 23:57 UTCGHSA enrichment
  34. 2026-08-28 21:42 UTCEPSS rescore
  35. 2026-08-27 20:52 UTCEG score recompute
  36. 2026-08-27 20:52 UTCGHSA enrichment
  37. 2026-08-27 14:25 UTCEPSS rescore
  38. 2026-08-26 19:22 UTCEG score recompute
  39. 2026-08-26 19:22 UTCGHSA enrichment
  40. 2026-08-26 18:41 UTCEG score recompute
  41. 2026-08-26 18:41 UTCGHSA enrichment
  42. 2026-08-26 16:37 UTCEG score recompute
  43. 2026-08-26 15:55 UTCEG score recompute
  44. 2026-08-26 15:54 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81034?
CVE-2026-81034 is a medium vulnerability published on August 26, 2026. Netmaker disables certificate verification on the connection to the configured mail server. The sender in pro/email/smtp.go assigns a TLS configuration whose skip-verify field is set to true unconditionally, directly beneath a comment stating that the setting should be false in production. No…
When was CVE-2026-81034 disclosed?
CVE-2026-81034 was first published in the National Vulnerability Database on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81034 actively exploited?
CVE-2026-81034 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 94.3% of all scored CVEs.
What is the CVSS score of CVE-2026-81034?
CVE-2026-81034 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-81034?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81034, 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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