CVE-2026-19014: CWE-770: Allocation of Resources Without Limits or Throttling in HashiCorp Consul
HashiCorp Consul versions 1.17.0 through 2.0.2 contain a resource consumption vulnerability in the Connect authorization endpoint. This flaw allows an attacker to cause uncontrolled growth of the agent's intention-match cache, bypassing the operator's cache-disable settings. The issue is addressed in Consul 2.0.3 and later versions, including specific Enterprise releases.
AI Analysis
Technical Summary
CVE-2026-19014 is a resource consumption vulnerability (CWE-770) affecting HashiCorp Consul Community Edition and Enterprise versions 1.17.0 through 2.0.2. The vulnerability exists in the Connect authorization endpoint, where an attacker can cause the agent's intention-match cache to grow without limits, even if the operator has disabled caching. This can lead to resource exhaustion on the affected system. The vulnerability is fixed in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
The vulnerability can cause uncontrolled resource consumption on the affected Consul agents by allowing the intention-match cache to grow indefinitely. This may degrade system performance or availability due to resource exhaustion. There is no impact on confidentiality or integrity reported. The CVSS score of 4.3 reflects a medium severity with no confidentiality or integrity impact but availability impact due to resource exhaustion.
Mitigation Recommendations
A fix is available in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3. Users should upgrade to these versions or later to remediate the vulnerability. No other mitigations or workarounds are specified.
CVE-2026-19014: CWE-770: Allocation of Resources Without Limits or Throttling in HashiCorp Consul
Description
HashiCorp Consul versions 1.17.0 through 2.0.2 contain a resource consumption vulnerability in the Connect authorization endpoint. This flaw allows an attacker to cause uncontrolled growth of the agent's intention-match cache, bypassing the operator's cache-disable settings. The issue is addressed in Consul 2.0.3 and later versions, including specific Enterprise releases.
CVSS v3.1
Score 4.3medium
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-2026-19014 is a resource consumption vulnerability (CWE-770) affecting HashiCorp Consul Community Edition and Enterprise versions 1.17.0 through 2.0.2. The vulnerability exists in the Connect authorization endpoint, where an attacker can cause the agent's intention-match cache to grow without limits, even if the operator has disabled caching. This can lead to resource exhaustion on the affected system. The vulnerability is fixed in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
The vulnerability can cause uncontrolled resource consumption on the affected Consul agents by allowing the intention-match cache to grow indefinitely. This may degrade system performance or availability due to resource exhaustion. There is no impact on confidentiality or integrity reported. The CVSS score of 4.3 reflects a medium severity with no confidentiality or integrity impact but availability impact due to resource exhaustion.
Mitigation Recommendations
A fix is available in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3. Users should upgrade to these versions or later to remediate the vulnerability. No other mitigations or workarounds are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2026-08-05T20:21:24.334Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a763509bf8831d5390b014a
Added to database: 08/07/2026, 19:42:01 UTC
Last enriched: 08/07/2026, 20:01:01 UTC
Last updated: 08/07/2026, 20:01:01 UTC
Views: 2
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