CVE-2026-19012
Medium
Description
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.
SeverityMedium
CVSS5.3
Exploit probability26. percentile0.3%
ProductConsul
PublishedAug 7, 2026
First seenAug 7, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- HashiCorp Consul2.0.3 or later
- HashiCorp Consul Enterprise2.0.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| HashiCorp Consul | 1.18.0 ≤ v < 2.0.3 | 2.0.3 |
| HashiCorp Consul Enterprise | 1.18.0 ≤ v < 2.0.3 | 2.0.3 |
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