---
id: CVE-2021-38698
aliases:
  - GHSA-6hw5-6gcx-phmw
  - BIT-consul-2021-38698
  - GO-2022-0559
title: >-
  HashiCorp Consul and Consul Enterprise 1.10.1 Txn.Apply endpoint allowed
  services to register proxies for other services, enabling access…
summary: >-
  HashiCorp Consul and Consul Enterprise 1.10.1 Txn.Apply endpoint allowed
  services to register proxies for other services, enabling access to service
  traffic.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
vendor: hashicorp
product: github.com/hashicorp/consul
ecosystem: go
affected:
  - 'github.com/hashicorp/consul >= 1.10.1, < 1.10.2'
  - 'github.com/hashicorp/consul >= 1.9.0, < 1.9.9'
  - github.com/hashicorp/consul < 1.8.15
patched:
  - github.com/hashicorp/consul 1.10.2
  - github.com/hashicorp/consul 1.9.9
  - github.com/hashicorp/consul 1.8.15
published: '2021-09-08'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:49:08.568208801Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-6hw5-6gcx-phmw'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2021-38698'
  - url: 'https://github.com/hashicorp/consul/pull/10824'
  - url: >-
      https://discuss.hashicorp.com/t/hcsec-2021-24-consul-missing-authorization-check-on-txn-apply-endpoint/29026
  - url: 'https://github.com/hashicorp/consul'
  - url: 'https://security.gentoo.org/glsa/202208-09'
  - url: 'https://www.hashicorp.com/blog/category/consul'
tags:
  - osv
  - go
epss: 0.01423
epssPercentile: 0.71756
ingestedAt: '2026-09-12T03:13:01.759Z'
---

## Overview

HashiCorp Consul and Consul Enterprise 1.10.1 Txn.Apply endpoint allowed services to register proxies for other services, enabling access to service traffic. Fixed in 1.8.15, 1.9.9 and 1.10.2.

## Affected packages

- `github.com/hashicorp/consul >= 1.10.1, < 1.10.2`
- `github.com/hashicorp/consul >= 1.9.0, < 1.9.9`
- `github.com/hashicorp/consul < 1.8.15`

## Remediation

Upgrade to a patched release:

- `github.com/hashicorp/consul 1.10.2`
- `github.com/hashicorp/consul 1.9.9`
- `github.com/hashicorp/consul 1.8.15`