CVE-2026-105765
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Authorization Bypass in HashiCorp Consul Service Mesh

Publication date: 2026-10-26

Last updated on: 2026-10-26

Assigner: HashiCorp Inc.

Description
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.

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Meta Information

Published
2026-10-26
Last Modified
2026-10-26
Generated
2026-10-26
AI Q&A
2026-10-26
EPSS Evaluated
N/A
NVD
CVE-2026-105765
EUVD
EUVD-2026-110050

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
HashiCorp Consul 1.17.0
HashiCorp Consul Enterprise 1.17.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

HashiCorp Consul and Consul Enterprise versions 1.17.0 to 2.0.4 have an authorization bypass in the agent's service mesh leaf certificate API. This allows an attacker without a valid ACL token to retrieve a cached service leaf certificate and its private key.

Impact Analysis

An attacker could gain access to sensitive private keys and certificates, potentially allowing them to decrypt communications or impersonate services within the Consul service mesh.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating confidentiality requirements in GDPR and HIPAA. Organizations using affected versions may face compliance violations and potential penalties.

Mitigation Strategies

Upgrade to Consul Community Edition 2.1.0 or Consul Enterprise 2.1.0 or 1.21.19 or later to address the vulnerability.

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