What’s Vulnerable › Vulnerabilities

CVE-2026-105216: go-micro before 6.0.0 Disabled TLS Certificate Verification via tls.Config Helper

• Severity: high (CVSS 7.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-04 · updated 2026-10-27
• Weakness: CWE-295

Description

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.

Affected products

• micro go-micro: before 6.0.0 — fixed in 6.0.0

How to fix

Upgrade to a fixed version: micro go-micro 6.0.0. Check the vendor advisory for mitigations.

References

• https://github.com/micro/go-micro
• https://github.com/micro/go-micro/blob/v5.30.0/internal/util/tls/tls.go#L43-L67
• https://github.com/micro/go-micro/commit/c7657f73f45cf839e643db10f28703eeab7299c3
• https://github.com/micro/go-micro/issues/2963
• https://www.vulncheck.com/advisories/go-micro-before-6.0.0-disabled-tls-certificate-verification-via-tls-config-helper

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