What’s Vulnerable › Vulnerabilities
CVE-2026-115804: Consul vulnerable to an authorization bypass in health check registration
- Severity: medium (CVSS 6.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-26 · updated 2026-10-26
- Weakness: CWE-639
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
- HashiCorp Consul: from 0.7.2 before 2.1.0 — fixed in 2.1.0
- HashiCorp Consul Enterprise: from 0.7.2 before 2.1.0 — fixed in 2.1.0
How to fix
Upgrade to a fixed version: HashiCorp Consul 2.1.0; HashiCorp Consul Enterprise 2.1.0. Check the vendor advisory for mitigations.
References
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