CVE-2026-110720

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

State: Published
Severity: 9.9 Critical
Published: Oct 26, 2026
Updated: Oct 26, 2026
Reserved: Oct 14, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.9 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	HashiCorp

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
ToolingHashiCorp	0.42.0 to before 2.0.4Affectedfrom 1.8.18Not affected

References

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

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