CVE-2026-19012: CWE-476: NULL Pointer Dereference in HashiCorp Consul
HashiCorp Consul versions 1.18.0 through 2.0.2 contain a vulnerability (CVE-2026-19012) where an authenticated user with config-entry write permission can cause a denial of service by submitting a crafted service-router configuration entry that crashes the Consul server. This issue affects both the Community and Enterprise editions and is fixed in versions 2.0.3 and later.
AI Analysis
Technical Summary
CVE-2026-19012 is a NULL pointer dereference vulnerability (CWE-476) in HashiCorp Consul Community Edition and Enterprise Edition versions 1.18.0 through 2.0.2. An authenticated caller with config-entry write permission can submit a malicious service-router configuration entry that causes the Consul agent to exit unexpectedly, resulting in a denial of service. The vulnerability exists in the Enterprise-to-Community Edition downgrade path. The issue is resolved in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
An authorized user with config-entry write permission can crash the Consul server, causing a denial of service. There is no impact on confidentiality or integrity. The vulnerability requires authentication and high attack complexity.
Mitigation Recommendations
Upgrade to Consul version 2.0.3 or later, or Consul Enterprise versions 1.21.17, 1.22.11, or later. Patch status is confirmed fixed in these versions. No other mitigation or workaround is indicated.
CVE-2026-19012: CWE-476: NULL Pointer Dereference in HashiCorp Consul
Description
HashiCorp Consul versions 1.18.0 through 2.0.2 contain a vulnerability (CVE-2026-19012) where an authenticated user with config-entry write permission can cause a denial of service by submitting a crafted service-router configuration entry that crashes the Consul server. This issue affects both the Community and Enterprise editions and is fixed in versions 2.0.3 and later.
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-2026-19012 is a NULL pointer dereference vulnerability (CWE-476) in HashiCorp Consul Community Edition and Enterprise Edition versions 1.18.0 through 2.0.2. An authenticated caller with config-entry write permission can submit a malicious service-router configuration entry that causes the Consul agent to exit unexpectedly, resulting in a denial of service. The vulnerability exists in the Enterprise-to-Community Edition downgrade path. The issue is resolved in Consul 2.0.3 and Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
An authorized user with config-entry write permission can crash the Consul server, causing a denial of service. There is no impact on confidentiality or integrity. The vulnerability requires authentication and high attack complexity.
Mitigation Recommendations
Upgrade to Consul version 2.0.3 or later, or Consul Enterprise versions 1.21.17, 1.22.11, or later. 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
- 2026-08-05T20:21:09.285Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a763509bf8831d5390b0147
Added to database: 08/07/2026, 19:42:01 UTC
Last enriched: 08/07/2026, 20:01:10 UTC
Last updated: 08/07/2026, 20:01:10 UTC
Views: 2
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