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

{
  "id": "9da8cfe954269322f4264bd678981c6057191f11cd7f9c5f766d38e9a4e079a2",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-110720",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Consul-k8s vulnerable to a cross-namespace authorization bypass in component ACL binding rules",
    "summary": "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.",
    "evidence": "cve:CVE-2026-110720",
    "products": [
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        "fixed_versions": [],
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    "severity": "critical",
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      "affected": [
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          "repo": "https://github.com/hashicorp/consul-k8s",
          "vendor": "HashiCorp",
          "product": "Tooling",
          "versions": [
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              "status": "affected",
              "changes": [
                {
                  "at": "1.8.18",
                  "status": "unaffected"
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              "version": "0.42.0",
              "lessThan": "2.0.4",
              "versionType": "semver"
            }
          ],
          "platforms": [
            "64 bit",
            "32 bit",
            "x86",
            "ARM",
            "MacOS",
            "Windows",
            "Linux"
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-26T19:38:28.240Z",
      "provider": "cve",
      "references": [
        "https://discuss.hashicorp.com/t/hcsec-2026-50-consul-k8s-vulnerable-to-a-cross-namespace-authorization-bypass-in-component-acl-binding-rules/77915"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
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                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-110720",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
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                      {
                        "Technical Impact": "total"
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                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-26T19:06:05.963836Z"
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  "source_id": "core-cve",
  "document_id": 338270,
  "published_at": "2026-10-26T18:38:14.209+00:00"
}