CVE-2026-19113: CWE-400: Uncontrolled Resource Consumption in HashiCorp Consul
HashiCorp Consul versions 1.3.0 through 2.0.2 contain an unauthenticated denial of service vulnerability in several agent HTTP API endpoints. An attacker can cause the agent to consume excessive memory, leading to service disruption. This issue is fixed in Consul 2.0.3 and later versions, including specific enterprise releases.
AI Analysis
Technical Summary
CVE-2026-19113 is a resource consumption vulnerability (CWE-400) affecting HashiCorp Consul Community Edition and Enterprise versions 1.3.0 through 2.0.2. The flaw allows an unauthenticated remote attacker to trigger substantial memory usage in several agent HTTP API endpoints before the request is rejected, resulting in a denial of service condition. The vulnerability has a CVSS 3.1 base score of 5.3, indicating medium severity. It is addressed in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
Successful exploitation leads to denial of service by causing the Consul agent to consume excessive memory, potentially disrupting service availability. There is no impact on confidentiality or integrity. The attack requires no authentication and can be performed remotely.
Mitigation Recommendations
A fix is available in Consul 2.0.3 and the specified Enterprise versions (1.21.17, 1.22.11, and 2.0.3). Users should upgrade to these versions to remediate the vulnerability. Patch status is confirmed by the vendor advisory. No additional mitigation guidance is provided.
CVE-2026-19113: CWE-400: Uncontrolled Resource Consumption in HashiCorp Consul
Description
HashiCorp Consul versions 1.3.0 through 2.0.2 contain an unauthenticated denial of service vulnerability in several agent HTTP API endpoints. An attacker can cause the agent to consume excessive memory, leading to service disruption. This issue is fixed in Consul 2.0.3 and later versions, including specific enterprise releases.
CVSS v3.1
Score 5.3medium
Affected software
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 resource consumption vulnerability (CWE-400) affecting HashiCorp Consul Community Edition and Enterprise versions 1.3.0 through 2.0.2. The flaw allows an unauthenticated remote attacker to trigger substantial memory usage in several agent HTTP API endpoints before the request is rejected, resulting in a denial of service condition. The vulnerability has a CVSS 3.1 base score of 5.3, indicating medium severity. It is addressed in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
Successful exploitation leads to denial of service by causing the Consul agent to consume excessive memory, potentially disrupting service availability. There is no impact on confidentiality or integrity. The attack requires no authentication and can be performed remotely.
Mitigation Recommendations
A fix is available in Consul 2.0.3 and the specified Enterprise versions (1.21.17, 1.22.11, and 2.0.3). Users should upgrade to these versions to remediate the vulnerability. Patch status is confirmed by the vendor advisory. No additional mitigation guidance is provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2026-08-06T14:10:14.667Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a763509bf8831d5390b0156
Added to database: 08/07/2026, 19:42:01 UTC
Last enriched: 08/07/2026, 20:00:25 UTC
Last updated: 08/07/2026, 22:41:58 UTC
Views: 5
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