---
title: "github.com/labstack/echo/v4"
description: "An authentication bypass flaw affects the Go package github.com/labstack/echo/v4. Affected versions: >= 4.0.0, < 4.16.1. Fixed from version 4.16.1."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-10-23-ghsa-cxf3-9h37-7rr8
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-10-23
dateModified: 2026-10-23
---
# github.com/labstack/echo/v4

An authentication bypass flaw affects the Go package github.com/labstack/echo/v4. Affected versions: >= 4.0.0, < 4.16.1. Fixed from version 4.16.1.

## What to do

Update github.com/labstack/echo/v4 to 4.16.1 or later.

| Fact | Value |
| --- | --- |
| Package | github.com/labstack/echo/v4 |
| Ecosystem | Go modules |
| Class | Authentication bypass |
| Affected versions | >= 4.0.0, < 4.16.1 |
| Fixed version | 4.16.1 |
| GHSA | GHSA-cxf3-9h37-7rr8 |
| Published on | October 23, 2026 |
| Severity | Critical |

## Sources

- [GitHub Security Advisory — GHSA-cxf3-9h37-7rr8](https://github.com/advisories/GHSA-cxf3-9h37-7rr8) — GitHub Security Advisories

---

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