Vulnerability DatabaseCVE-2026-110720
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CVE-2026-110720
Published:October 26, 2026
Updated:October 28, 2026
Consul-k8s versions 0.42.0 and later are vulnerable to a cross-namespace authorization bypass in component ACL binding rules that may allow an attacker to obtain elevated Consul privileges. This vulnerability (CVE-2026-110720) is fixed in consul-k8s 2.1.0 and 1.8.18.
Affected Packages
https://github.com/hashicorp/consul-k8s.git (GITHUB):
Affected version(s) >=v0.42.0 <v1.8.18
Fix Suggestion:
Update to version v1.8.18
https://github.com/hashicorp/consul-k8s.git (GITHUB):
Affected version(s) >=v1.9.0-rc1 <v2.1.0
Fix Suggestion:
Update to version v2.1.0
Related Resources (2)
https://discuss.hashicorp.com/t/hcsec-2026-50-consul-k8s-vulnerable-to-a-cross-namespace-authorization-bypass-in-component-acl-binding-rules/77915
https://nvd.nist.gov/vuln/detail/CVE-2026-110720
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CVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.9
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Incorrect Authorization
CWE-863
EPSS
Base Score:
0.36