Auth bypass in Hashicorp Consul
CVE-2026-115804
HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in health check registration that may allow an authenticated user to modify health checks belonging to another service on the same node. This vulnerability (CVE-2026-115804) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-115804?
- CVE-2026-115804 is a medium-severity vulnerability in Hashicorp Consul, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.4/10. Published 2026-10-26.
- How severe is CVE-2026-115804?
- Medium severity. CVSS v3 base score is 6.4 out of 10.