CVE-2026-19012: Hashicorp Consul

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Consul Community Edition and Consul Enterprise 1.18.0 through 2.0.2 are vulnerable to an authenticated denial of service in the Enterprise-to-Community Edition downgrade path that may allow an authorized caller to crash the Consul server. A caller with config-entry write permission can submit a service-router configuration entry that causes the agent to exit unexpectedly. This vulnerability, CVE-2026-19012, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.

Affected products

• Hashicorp Consul: from 1.18.0, before 2.0.3 (fixed in 2.0.3)
• Hashicorp Consul Enterprise: from 1.18.0, before 2.0.3 (fixed in 2.0.3)

Published 2026-08-07. Last modified 2026-08-28.