Vulnerability · Published Oct 26, 2026 · Assigned by HashiCorp
CVE-2026-115804Consul vulnerable to an authorization bypass in health check registration
Medium 6.4
In plain English
A medium-severity authorization bypass via user-controlled key in Consul from HashiCorp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | consul | no fix listed | UBUNTU-CVE-2026-115804 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HashiCorp | Consul | 0.7.2 – before 2.1.0 |
| HashiCorp | Consul Enterprise | 0.7.2 – before 2.1.0 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L