---
id: CVE-2026-87107
title: >-
  Consul vulnerable to an authorization bypass in the catalog deregistration
  path
summary: >-
  Consul and Consul Enterprise are vulnerable to an authorization bypass in the
  catalog deregistration path that may allow a local ACL token to delete
  peer-imported catalog objects. A caller with {{service:write}} or
  {{node:write}} permiss…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-863
vendor: HashiCorp
product: Consul
affected:
  - Consul >= 1.21.0 < 2.0.4
  - consul_enterprise >= 1.21.0 < 2.0.4
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T19:21:57.382969Z'
published: '2026-09-10'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T19:22:09.223Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-87107'
references:
  - url: >-
      https://discuss.hashicorp.com/t/hcsec-2026-36-consul-vulnerable-to-an-authorization-bypass-in-the-catalog-deregistration-path/77738
tags:
  - cve.org
epss: 0.00314
epssPercentile: 0.21708
ingestedAt: '2026-09-11T16:45:48.024Z'
---

## Overview

Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog deregistration path that may allow a local ACL token to delete peer-imported catalog objects. A caller with {{service:write}} or {{node:write}} permission may exploit this issue to remove services, checks, or nodes imported from a peered cluster without holding authority over the peer origin. This vulnerability (CVE-2026-87107) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.

## Affected

- `Consul >= 1.21.0 < 2.0.4`
- `consul_enterprise >= 1.21.0 < 2.0.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.