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CVE-2026-15970

L7 intention authorization bypass via custom public listener

4.2 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.21%Unchanged since Aug 8, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.2

L7 intention authorization bypass via custom public listener

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.

Record
CVE-2026-15970
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness
CWE-647
Updated
2026-11-02
EUVDEUVD-2026-54611 4.2

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.

Record
EUVD-2026-54611
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-h928-jqxm-5f3x 4.2

Consul Community Edition and Consul Enterprise 1.20.1 through 2.0.2 are vulnerable to an L7...

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.

Record
GHSA-h928-jqxm-5f3x
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness
CWE-647
Updated
2026-11-02
NVD 4.2

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.

Record
CVE-2026-15970
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness
CWE-647
Updated
2026-11-02
OSV 4.2

L7 intention authorization bypass via custom public listener

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.

Record
CVE-2026-15970
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness
CWE-647
Updated
2026-11-02
OSVDEBIAN-CVE-2026-15970 4.2

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.

Record
DEBIAN-CVE-2026-15970
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2026-15970 4.2

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.

Record
UBUNTU-CVE-2026-15970
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Updated
2026-11-02
OSVBIT-consul-2026-15970 No score

L7 intention authorization bypass via custom public listener

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.

Record
BIT-consul-2026-15970
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
consul
Bitnami
 1.20.1 up to 2.0.3
2.0.3
consul
Debian:11
 All versions, plus listed versions
1.10.12+dfsg1-11.8.7+dfsg1-21.8.7+dfsg1-31.8.7+dfsg1-41.8.7+dfsg1-51.8.7+dfsg1-61.9.17+dfsg2-1
 None known
consul
Ubuntu:18.04:LTS
 All versions, plus listed versions
0.6.4~dfsg-3
 None known
consul
Ubuntu:20.04:LTS
 All versions, plus listed versions
1.0.7~dfsg1-5ubuntu11.4.4~dfsg1-2ubuntu21.5.2+dfsg1-61.5.2+dfsg1-101.5.2+dfsg1-121.5.2+dfsg2-14
 None known
consul
Ubuntu:22.04:LTS
 All versions, plus listed versions
1.7.4+dfsg1-11.8.7+dfsg1-3
 None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-15970 is a medium vulnerability (CVSS 4.2) in Hashicorp Consul, published August 7, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 10th percentile. Fixed in consul 2.0.3.

References

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