What is CVE-2026-110720?

CVE-2026-110720 is a critical-severity vulnerability in Hashicorp Tooling, classified under Incorrect Authorization. CVSS score: 9.9/10. Published 2026-10-26.

How severe is CVE-2026-110720?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Auth bypass in Hashicorp Tooling

CVE-2026-110720

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.

Vulnerability class: Broken Access Control

Published 2026-10-26 · last modified 2026-10-26.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Hashicorp Tooling

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

discuss.hashicorp.com/t/hcsec-2026-50-consul-k8s-vulnerable-to-a-cross-namespac…

Frequently asked questions

What is CVE-2026-110720?: CVE-2026-110720 is a critical-severity vulnerability in Hashicorp Tooling, classified under Incorrect Authorization. CVSS score: 9.9/10. Published 2026-10-26.
How severe is CVE-2026-110720?: Critical severity. CVSS v3 base score is 9.9 out of 10.