Advisoriesby IbisHashiCorpCVE-2026-19012
HashiCorp Consul: denial of service
Fix: upgrade to 2.0.3 or later (2 fixed versions below)
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| Consul Product | >= 1.18.0, < 2.0.3 | 2.0.3 |
| Consul Enterprise Product | >= 1.18.0, < 2.0.3 | 2.0.3 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-476