CVE-2026-105765

HIGH 7.5

Consul vulnerable to an authorization bypass in the agent's service mesh leaf certificate API

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	hashicorp
Product	consul
Published	Oct 26, 2026
Last Updated	Oct 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

HashiCorp / Consul

1.17.0 < 2.1.0

HashiCorp / Consul Enterprise

1.17.0 < 2.1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

discuss.hashicorp.com: https://discuss.hashicorp.com/t/hcsec-2026-46-consul-vulnerable-to-an-authorization-bypass-in-the-agents-service-mesh-leaf-certificate-api/77911

Credits

This issue was reported to HashiCorp by Tomas Castillo (https://github.com/muertostech).