---
id: CVE-2026-105216
title: >-
  go-micro before 6.0.0 contains an improper certificate validation
  vulnerability that allows network attackers to impersonate services because
  the shared TLS helper sets InsecureSkipVerify to true by default
summary: >-
  go-micro before 6.0.0 contains an improper certificate validation
  vulnerability that allows network attackers to impersonate services because
  the shared TLS helper sets InsecureSkipVerify to true by default.
  Man-in-the-middle attackers c…
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-295
vendor: micro
product: go-micro
affected:
  - go-micro < 6.0.0
published: '2026-10-04'
updated: '2026-10-04'
sourceUpdated: '2026-10-04T18:16:34.287'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105216'
references:
  - url: 'https://github.com/micro/go-micro'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/micro/go-micro/blob/v5.30.0/internal/util/tls/tls.go#L43-L67
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/micro/go-micro/commit/c7657f73f45cf839e643db10f28703eeab7299c3
    label: disclosure@vulncheck.com
  - url: 'https://github.com/micro/go-micro/issues/2963'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/go-micro-before-6.0.0-disabled-tls-certificate-verification-via-tls-config-helper
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-04T18:02:47.901Z'
---

## Overview

go-micro before 6.0.0 contains an improper certificate validation vulnerability that allows network attackers to impersonate services because the shared TLS helper sets InsecureSkipVerify to true by default. Man-in-the-middle attackers can present any certificate to intercept or modify gRPC transport, HTTP and RabbitMQ broker, and Consul or etcd registry traffic, including authentication tokens and credentials.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.