Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-81034— Netmaker through 1.6.0 Improper Certificate Validation in SMTP Client

Quick assessment

Affected
gravitl netmaker
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Netmaker是Netmaker组织的一款网络管理平台。 Netmaker 1.6.0及之前版本存在加密问题漏洞，该漏洞源于对配置的邮件服务器连接禁用了证书验证，可能导致中间人攻击，进而泄露密码重置令牌和用户邀请链接。

CVSS 6.5 · Medium EPSS 0.26% · P17

Affected Version Matrix 1

VendorProduct Version RangeStatus
gravitl netmaker ≤ 1.6.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-81034

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Netmaker through 1.6.0 Improper Certificate Validation in SMTP Client
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Netmaker 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Netmaker是Netmaker组织的一款网络管理平台。 Netmaker 1.6.0及之前版本存在加密问题漏洞，该漏洞源于对配置的邮件服务器连接禁用了证书验证，可能导致中间人攻击，进而泄露密码重置令牌和用户邀请链接。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
gravitl netmaker 0 ~ 1.6.0 -

II. Public POCs for CVE-2026-81034

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-81034

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-81034 (1)

Proof of Concept for CVE-2026-81034 (2)

Other References for CVE-2026-81034 (1)

IV. Related Vulnerabilities

Same product: netmaker
Same vendor: gravitl
Same weakness: CWE-295

V. Comments for CVE-2026-81034

No comments yet

Leave a comment