Vulnerability in Micro Go-Micro
CVE-2026-105216
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.
Vulnerability class: Improper Certificate Validation
Published .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/micro/go-micro/issues/2963 (issue-tracking)
- github.com/micro/go-micro/commit/c7657f73f45cf839e643db10f28703eeab7299c3 (patch)
- github.com/micro/go-micro/blob/v5.30.0/internal/util/tls/tls.go (technical-description)
- github.com/micro/go-micro (product)
- www.vulncheck.com/advisories/go-micro-before-6.0.0-disabled-tls-certificate-ver… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-105216?
- CVE-2026-105216 is a high-severity vulnerability in Micro Go-Micro, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2026-10-04.
- How severe is CVE-2026-105216?
- High severity. CVSS v3 base score is 7.4 out of 10.