CVE-2026-81034

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated
6.5EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.5Exploit: No code on recordExposed services: Not assessed

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

The CVE record's CNA (VulnCheck) lists gravitl netmaker versions up to and including 1.6.0 as affected. No release containing a fix is confirmed on record.

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
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100

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 (value × EchelonGraph’s weight)
Severity65% × 45%
The EG Score, 6.5 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
16th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 26, 2026

Last Modified

September 24, 2026

Advisory Details (4)

Auto-updated Aug 26, 2026
No fix on record yet.
Web page

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
Web page

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
Web page

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

https://github.com/gravitl/netmaker/issues/4062
Web page

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 17× in last 7d / 74× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 126 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 27 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  3. 2026-10-12 14:57 UTCEG score recompute
  4. 2026-10-11 19:21 UTCEG score recompute
  5. 2026-10-11 16:37 UTCEG score recompute
  6. 2026-10-11 13:55 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  9. 2026-10-10 09:54 UTCEG score recompute
  10. 2026-10-10 09:53 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  12. 2026-10-09 06:10 UTCEG score recompute
  13. 2026-10-09 06:10 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  14. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  15. 2026-10-08 04:40 UTCEG score recompute
  16. 2026-10-08 04:40 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  17. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  18. 2026-10-07 03:11 UTCEG score recompute
  19. 2026-10-07 03:11 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  20. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  21. 2026-10-06 01:41 UTCEG score recompute
  22. 2026-10-06 01:41 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  23. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  24. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  25. 2026-10-04 19:41 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
Show 74 more
  1. 2026-10-03 16:06 UTCEG score recompute
  2. 2026-10-03 16:06 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  3. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  4. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  5. 2026-10-02 09:08 UTCEG score recompute
  6. 2026-10-02 09:08 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  7. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  8. 2026-10-01 07:31 UTCEG score recompute
  9. 2026-10-01 07:31 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  10. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  11. 2026-09-30 06:02 UTCEG score recompute
  12. 2026-09-30 06:02 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  13. 2026-09-28 23:48 UTCEG score recompute
  14. 2026-09-28 23:47 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  15. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  16. 2026-09-27 22:15 UTCEG score recompute
  17. 2026-09-27 22:15 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  18. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  19. 2026-09-26 20:35 UTCEG score recompute
  20. 2026-09-26 20:34 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  21. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  22. 2026-09-24 21:14 UTCEG score recompute
  23. 2026-09-24 21:14 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  24. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  25. 2026-09-23 22:13 UTCEG score recompute
  26. 2026-09-23 22:13 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  27. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  28. 2026-09-22 20:42 UTCEG score recompute
  29. 2026-09-22 20:42 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  30. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  31. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  32. 2026-09-21 19:13 UTCEG score recompute
  33. 2026-09-21 19:13 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  34. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  35. 2026-09-20 17:43 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  36. 2026-09-19 16:05 UTCEG score recompute
  37. 2026-09-19 16:05 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  38. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  39. 2026-09-18 14:36 UTCEG score recompute
  40. 2026-09-18 14:36 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  41. 2026-09-17 13:06 UTCEG score recompute
  42. 2026-09-17 13:06 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  43. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  44. 2026-09-16 11:20 UTCEG score recompute
  45. 2026-09-16 11:20 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  46. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  47. 2026-09-15 09:51 UTCEG score recompute
  48. 2026-09-15 09:51 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  49. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  50. 2026-09-14 08:21 UTCEG score recompute
  51. 2026-09-14 08:21 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  52. 2026-09-13 06:52 UTCEG score recompute
  53. 2026-09-13 06:52 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  54. 2026-09-12 05:17 UTCEG score recompute
  55. 2026-09-12 05:17 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  56. 2026-09-11 03:47 UTCEG score recompute
  57. 2026-09-11 03:47 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  58. 2026-09-10 02:17 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  59. 2026-09-09 00:48 UTCEG score recompute
  60. 2026-09-09 00:48 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  61. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  62. 2026-09-07 15:09 UTCEG score recompute
  63. 2026-09-07 15:09 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  64. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  65. 2026-09-06 12:11 UTCEG score recompute
  66. 2026-09-06 12:11 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  67. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  68. 2026-09-05 10:37 UTCEG score recompute
  69. 2026-09-05 10:37 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  70. 2026-09-04 09:04 UTCEG score recompute
  71. 2026-09-04 09:04 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5
  72. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  73. 2026-09-03 07:35 UTCEG score recompute
  74. 2026-09-03 07:35 UTCGHSA enrichmentGHSA-36r8-h3x6-x34c · GitHub severity HIGH · GitHub CVSS 6.5

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81034?
CVE-2026-81034 is a medium-severity vulnerability; its CVE record was 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 made public?
CVE-2026-81034 was made public on August 26, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 26, 2026. EchelonGraph's copy of the record carries a last-modified date of September 24, 2026; the record at its source may have been updated since.
Is CVE-2026-81034 actively exploited?
CVE-2026-81034 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (16th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81034?
CVE-2026-81034 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-81034?
No fix for CVE-2026-81034 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (VulnCheck) lists gravitl netmaker versions up to and including 1.6.0 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-81034 are linked in the Vendor Advisories panel on this page.

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