---
id: CVE-2026-105765
title: >-
  Consul vulnerable to an authorization bypass in the agent's service mesh leaf
  certificate API
summary: >-
  HashiCorp Consul and Consul Enterprise 1.17.0 up to 2.0.4 are vulnerable to an
  authorization bypass in the agent's service mesh leaf certificate API that may
  allow an attacker without a valid ACL token to retrieve a cached service leaf
  c…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-862
vendor: HashiCorp
product: Consul
affected:
  - Consul >= 1.17.0 < 2.1.0
  - consul_enterprise >= 1.17.0 < 2.1.0
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T18:12:14.351Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-105765'
references:
  - url: >-
      https://discuss.hashicorp.com/t/hcsec-2026-46-consul-vulnerable-to-an-authorization-bypass-in-the-agents-service-mesh-leaf-certificate-api/77911
tags:
  - cve.org
ingestedAt: '2026-10-26T18:35:51.696Z'
epss: 0.00237
epssPercentile: 0.14613
---

## Overview

HashiCorp Consul and Consul Enterprise 1.17.0 up to 2.0.4 are vulnerable to an authorization bypass in the agent's service mesh leaf certificate API that may allow an attacker without a valid ACL token to retrieve a cached service leaf certificate and its private key. This vulnerability (CVE-2026-105765) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.

## Affected

- `Consul >= 1.17.0 < 2.1.0`
- `consul_enterprise >= 1.17.0 < 2.1.0`

## Remediation

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