CVE-2026-15970: CWE-647: Non-Canonical URL Authorization in HashiCorp Consul
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.
AI Analysis
Technical Summary
CVE-2026-15970 is a non-canonical URL authorization bypass vulnerability in HashiCorp Consul Community Edition and Enterprise versions 1.20.1 through 2.0.2. When a service proxy is configured with a custom public listener, an authenticated mesh workload can access HTTP paths that should be blocked by path-based deny intentions, effectively bypassing intended authorization controls. The vulnerability is addressed in Consul 2.0.3 and Consul Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
An authenticated mesh workload can circumvent path-based deny intentions, potentially accessing HTTP paths that should be restricted. This could lead to unauthorized information disclosure or limited unauthorized access within the service mesh environment. The impact is limited to confidentiality and integrity with no availability impact, and requires low privileges and high attack complexity.
Mitigation Recommendations
Upgrade affected Consul versions to 2.0.3 or later for Community Edition, or to 1.21.17, 1.22.11, or 2.0.3 for Consul Enterprise. Patch availability is confirmed by the vendor advisory. No alternative mitigations are specified.
CVE-2026-15970: CWE-647: Non-Canonical URL Authorization in HashiCorp Consul
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.
CVSS v3.1
Score 4.2medium
Affected software
HashiCorp
Consul
HashiCorp
Consul Enterprise
pkg:github/Consul EnterpriseRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-15970 is a non-canonical URL authorization bypass vulnerability in HashiCorp Consul Community Edition and Enterprise versions 1.20.1 through 2.0.2. When a service proxy is configured with a custom public listener, an authenticated mesh workload can access HTTP paths that should be blocked by path-based deny intentions, effectively bypassing intended authorization controls. The vulnerability is addressed in Consul 2.0.3 and Consul Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
An authenticated mesh workload can circumvent path-based deny intentions, potentially accessing HTTP paths that should be restricted. This could lead to unauthorized information disclosure or limited unauthorized access within the service mesh environment. The impact is limited to confidentiality and integrity with no availability impact, and requires low privileges and high attack complexity.
Mitigation Recommendations
Upgrade affected Consul versions to 2.0.3 or later for Community Edition, or to 1.21.17, 1.22.11, or 2.0.3 for Consul Enterprise. Patch availability is confirmed by the vendor advisory. No alternative mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2026-07-16T15:31:32.340Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a763509bf8831d5390b0141
Added to database: 08/07/2026, 19:42:01 UTC
Last enriched: 08/15/2026, 15:13:42 UTC
Last updated: 09/22/2026, 01:52:42 UTC
Views: 50
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