CVE-2026-110720 Consul-k8s - Broken Access Control

Consul-k8s >= 0.42.0 contains a broken access control caused by cross-namespace authorization bypass in ACL binding rules, letting attackers obtain elevated Consul privileges, exploit requires access to the cluster.

CVSS base score 9.9 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
26 October 2026
Updated
27 October 2026
Weakness
CWE-863

Vendor fix

Update to versions 2.1.0 or 1.8.18 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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