CVE-2026-105216

critical

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.

References

https://www.vulncheck.com/advisories/go-micro-before-6.0.0-disabled-tls-certificate-verification-via-tls-config-helper

https://github.com/micro/go-micro/issues/2963

https://github.com/micro/go-micro/commit/c7657f73f45cf839e643db10f28703eeab7299c3

https://github.com/micro/go-micro/blob/v5.30.0/internal/util/tls/tls.go#L43-L67

https://github.com/micro/go-micro

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-92119

Details

Source: Mitre, NVD

Published: 2026-10-04

Updated: 2026-10-06

Risk Information

CVSS v2

Base Score: 7.1

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 7.4

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: High

CVSS v4

Base Score: 9.1

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Severity: Critical

EPSS

EPSS: 0.00194