Consul HTTP API Excess Memory: Unauth DoS 1.3.0-2.0.2
CVE-2026-19113 Published on August 7, 2026
Unauthenticated denial of service via unbounded request body processing
Consul Community Edition and Consul Enterprise 1.3.0 through 2.0.2 are vulnerable to an unauthenticated denial of service in several agent HTTP API endpoints. A remote caller could cause the agent to consume substantial memory before the request was rejected. This vulnerability, CVE-2026-19113, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2026-19113 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-19113
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Affected Versions
HashiCorp Consul:- Version 1.3.0 and below 2.0.3 is affected.
- Version 1.3.0 and below 2.0.3 is affected.