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CVE-2026-115804— Consul vulnerable to an authorization bypass in health check registration

Quick assessment

Affected
HashiCorp Consul
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HashiCorp Consul 和 Consul Enterprise 存在健康检查注册中的授权绕过漏洞，该漏洞可能允许已认证用户修改同一节点上其他服务的健康检查。此漏洞（CVE-2026-115804）已在 Consul 社区版 2.1.0、Consul Enterprise 2.1.0 和 1.21.19 中修复。

CVSS 6.4 · Medium
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I. Basic Information for CVE-2026-115804

Vulnerability Information
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Vulnerability Title
Consul vulnerable to an authorization bypass in health check registration
Source: CVE Program / CVE List V5
Vulnerability Description
HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in health check registration that may allow an authenticated user to modify health checks belonging to another service on the same node. This vulnerability (CVE-2026-115804) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
HashiCorp Consul 0.7.2 ~ 2.1.0 -
HashiCorp Consul Enterprise 0.7.2 ~ 2.1.0 -

II. Public POCs for CVE-2026-115804

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III. Intelligence Information for CVE-2026-115804

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Other References for CVE-2026-115804 (1)

Same Patch Batch · HashiCorp · 2026-10-26 · 5 CVEs total

CVE-2026-110720 9.9 CRITICAL Consul-k8s vulnerable to a cross-namespace authorization bypass in component ACL binding r
CVE-2026-105608 8.8 HIGH Consul vulnerable to an authorization bypass in service mesh registration
CVE-2026-105765 7.5 HIGH Consul vulnerable to an authorization bypass in the agent's service mesh leaf certificate
CVE-2026-105626 7.5 HIGH Consul vulnerable to a denial of service in HTTP APIs

IV. Related Vulnerabilities

Same product: Consul
Same vendor: HashiCorp
Same weakness: CWE-639