CVE-2021-23409: Go-Proxyproto Project Go-Proxyproto

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

The package github.com/pires/go-proxyproto before 0.6.0 are vulnerable to Denial of Service (DoS) via creating connections without the proxy protocol header.

Affected products

• Go-Proxyproto Project Go-Proxyproto: before 0.6.0 (fixed in 0.6.0)

Published 2021-07-21. Last modified 2026-06-17.