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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| HashiCorp | Consul | 0.7.2 – < 2.1.0 | 2.1.0 |
| HashiCorp | Consul Enterprise | 0.7.2 – < 2.1.0 | 2.1.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | consul | No fix yet | — |
| Ubuntu 20.04 LTS | consul | No fix yet | — |
| Ubuntu 18.04 LTS | consul | No fix yet | — |