NULL pointer dereference in Hashicorp Consul
CVE-2026-19012
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.
EPSS: 0.002 (16.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Hashicorp Consul — versions 1.18.0
- Hashicorp Consul Enterprise — versions 1.18.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-19012?
- CVE-2026-19012 is a medium-severity vulnerability in Hashicorp Consul, classified under NULL Pointer Dereference. CVSS score: 5.3/10. Published 2026-08-07.
- How severe is CVE-2026-19012?
- Medium severity. CVSS v3 base score is 5.3 out of 10.