CVE-2026-15970

L7 intention authorization bypass via custom public listener

State: Published
Severity: 4.2 Medium
Published: Aug 7, 2026
Updated: Aug 10, 2026
Reserved: Jul 16, 2026

Description

Consul Community Edition and Consul Enterprise 1.20.1 through 2.0.2 are vulnerable to an L7 intention authorization bypass when a service proxy is configured with a custom public listener. An authenticated mesh workload may reach HTTP paths that are blocked by a path-based deny intention. This vulnerability, CVE-2026-15970, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.

Scores

CVSS	Score	Vector	Source
3.1	4.2 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N	HashiCorp

Weaknesses

CWE-647 Non-Canonical URL Authorization

Affected Products

Product	Versions
ConsulHashiCorp	1.20.1 to before 2.0.3Affected
Consul EnterpriseHashiCorp	1.20.1 to before 2.0.3Affectedfrom 1.21.17Not affectedfrom 1.22.11Not affected

References

https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629

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