CVE-2026-81034Disclosure

LOWCVSS 8.3 · HIGH

Signal is active with 3 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-295

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 3 mentions across 1 observed day

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • 3 total mentions across 1 day

Deep dive

Activity timeline3 mentions / 1d
01223Mentions · 2026-08-27: 3Technical Details · 2026-08-27: 308-27
Signal classification1 categories
Disclosure
3100.0%
Referenced assets3 URLs
Full discourse3 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-81034 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-ver… https://www.cve.org/CVERecord?id=CVE-2026-81034 ----- Traducción: CVE-2026-81034 Net… https://infoflow.cloud`

    Post summary

    The post announces CVE‑2026‑81034, noting that Netmaker disables TLS certificate verification on email server connections, but provides no exploit, patch, or mitigation details.

    0000057
    102 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-81034 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-ver… https://www.cve.org/CVERecord?id=CVE-2026-81034

    Post summary

    The statement reveals that Netmaker’s SMTP implementation bypasses TLS certificate verification, constituting a credential‑or‑data‑exposure vulnerability without mention of exploits or patches.

    000001.2K
    58.0K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-81034 Netmaker Mail Server Certificate Verification Bypass Allows In-Transit Data Interception https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-81034

    Post summary

    The brief note announces CVE‑2026‑81034, describing a certificate verification bypass in Netmaker Mail Server that permits in‑transit data interception, with additional details available at the linked Vulmon page.

    00000100
    4.1K followersView on X

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