CVE-2026-105765

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

State: Published
Severity: 7.5 High
Published: Oct 26, 2026
Updated: Oct 26, 2026
Reserved: Oct 5, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	HashiCorp

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
ConsulHashiCorp	1.17.0 to before 2.1.0Affected
Consul EnterpriseHashiCorp	1.17.0 to before 2.1.0Affectedfrom 1.21.19Not affected

References

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

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