CVE-2026-19113: CWE-400: Uncontrolled Resource Consumption in HashiCorp Consul
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.
AI Analysis
Technical Summary
CVE-2026-19113 is a vulnerability in HashiCorp Consul Community Edition and Enterprise versions 1.3.0 through 2.0.2. It involves uncontrolled resource consumption (CWE-400) where unauthenticated remote attackers can trigger substantial memory usage in several agent HTTP API endpoints before the request is rejected, causing a denial of service. The vulnerability is addressed in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
Exploitation of this vulnerability results in denial of service due to excessive memory consumption by the Consul agent. There is no impact on confidentiality or integrity. The attack requires no authentication and can be performed remotely, potentially disrupting service availability.
Mitigation Recommendations
Upgrade affected Consul versions to 2.0.3 or later, or to the specified fixed Enterprise versions (1.21.17, 1.22.11, 2.0.3). Patch status is confirmed fixed in these versions. No other mitigation or workaround is indicated.
CVE-2026-19113: CWE-400: Uncontrolled Resource Consumption in HashiCorp Consul
Description
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.
CVSS v3.1
Score 5.3medium
Affected software
HashiCorp
Consul
HashiCorp
Consul Enterprise
pkg:github/Consul EnterpriseRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19113 is a vulnerability in HashiCorp Consul Community Edition and Enterprise versions 1.3.0 through 2.0.2. It involves uncontrolled resource consumption (CWE-400) where unauthenticated remote attackers can trigger substantial memory usage in several agent HTTP API endpoints before the request is rejected, causing a denial of service. The vulnerability is addressed in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
Exploitation of this vulnerability results in denial of service due to excessive memory consumption by the Consul agent. There is no impact on confidentiality or integrity. The attack requires no authentication and can be performed remotely, potentially disrupting service availability.
Mitigation Recommendations
Upgrade affected Consul versions to 2.0.3 or later, or to the specified fixed Enterprise versions (1.21.17, 1.22.11, 2.0.3). Patch status is confirmed fixed in these versions. No other mitigation or workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2026-08-06T14:10:14.667Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a763509bf8831d5390b0156
Added to database: 08/07/2026, 19:42:01 UTC
Last enriched: 08/15/2026, 15:14:22 UTC
Last updated: 09/21/2026, 22:01:32 UTC
Views: 59
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