---
id: CVE-2020-7219
aliases:
  - GHSA-23jv-v6qj-3fhh
  - BIT-consul-2020-7219
  - GO-2022-0776
title: Denial of Service (DoS) in HashiCorp Consul
summary: Denial of Service (DoS) in HashiCorp Consul
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: hashicorp
product: github.com/hashicorp/consul
ecosystem: go
affected:
  - github.com/hashicorp/consul < 1.6.3
patched:
  - github.com/hashicorp/consul 1.6.3
published: '2021-05-18'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:49:26.885066499Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-23jv-v6qj-3fhh'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2020-7219'
  - url: 'https://github.com/hashicorp/consul/issues/7159'
  - url: 'https://www.hashicorp.com/blog/category/consul'
tags:
  - osv
  - go
epss: 0.0201
epssPercentile: 0.80017
ingestedAt: '2026-09-12T03:13:01.744Z'
---

## Overview

HashiCorp Consul and Consul Enterprise up to 1.6.2 HTTP/RPC services allowed unbounded resource usage, and were susceptible to unauthenticated denial of service. Fixed in 1.6.3.

### Specific Go Packages Affected
github.com/hashicorp/consul/agent/consul

## Affected packages

- `github.com/hashicorp/consul < 1.6.3`

## Remediation

Upgrade to a patched release:

- `github.com/hashicorp/consul 1.6.3`