CVE-2026-19014 Uncontrolled resource consumption in the Consul Connect authorization endpoint
Attackers can exhaust memory by growing the intention-match cache in Consul Connect, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-19014?
CVE-2026-19014 is a medium-severity denial of service vulnerability in HashiCorp Consul, published on 7 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Consul Community Edition and Consul Enterprise 1.17.0 through 2.0.2 are vulnerable to an uncontrolled resource consumption issue in the Connect authorization endpoint that may allow a caller to grow the agent's intention-match cache without bound, defeating the operator's cache-disable configuration. This vulnerability, CVE-2026-190124, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.
Weakness: CWE-770
Which versions are affected by CVE-2026-19014?
1 open source package ship an affected version, including consul.
| Package | Affected | Fixed in |
|---|---|---|
consul Bitnami | From 1.17.0 | 2.0.3 |
How do I fix CVE-2026-19014?
Upgrade consul to 2.0.3 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-19014 being exploited?
There is no known exploitation of CVE-2026-19014 in the wild and no public exploit code.
Sources
Also known as BIT-consul-2026-19014, DEBIAN-CVE-2026-19014, GHSA-rwp8-hj7g-qrh8, MINI-63vj-358j-c55f, MINI-q24j-r22w-cp2f, UBUNTU-CVE-2026-19014.