by Kastro
Paper/Archive/CVE-2026-110720

CVE-2026-110720

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

EPSS 0.4%CVSS 9.9
critical.is priorityof 100
36
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 30.3.303 × 206.1No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Tooling0.42.0 – < 2.0.42.0.4CNA

Scores by source

HashiCorp (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

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