CVE-2026-15970 — MEDIUM (4.2)

Vulnerability 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 Score

4.2

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-647

References

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

FAQ

What is CVE-2026-15970?

CVE-2026-15970 is a vulnerability with a CVSS score of 4.2 (MEDIUM). 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 authenti...

How severe is CVE-2026-15970?

CVE-2026-15970 has been rated MEDIUM with a CVSS base score of 4.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-15970?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.