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CVE-2026-110720

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

CRITICAL
9.9
CVSS Score
Published: October 26, 2026 at 06:38 PM UTC
Updated: October 27, 2026 at 04:03 PM UTC
1 product affected across 1 vendorTooling

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Severity
CRITICAL9.9
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.9CRITICALHashiCorp
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-863

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