CVE-2026-110720

CRITICAL 9.9

Consul-k8s vulnerable to a cross-namespace authorization bypass in component ACL binding rules

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-863
Vendor	hashicorp
Product	tooling
Published	Oct 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

HashiCorp / Tooling

0.42.0 < 2.0.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

discuss.hashicorp.com: https://discuss.hashicorp.com/t/hcsec-2026-50-consul-k8s-vulnerable-to-a-cross-namespace-authorization-bypass-in-component-acl-binding-rules/77915

Credits

This issue was reported to HashiCorp by Elias Hasas (GitHub: zer0d4y5).