{"id":"CVE-2026-110720","state":"PUBLISHED","title":"Consul-k8s vulnerable to a cross-namespace authorization bypass in component ACL binding rules","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.","publishedAt":"2026-10-26T18:38:14.209Z","updatedAt":"2026-10-26T19:38:28.240Z","severity":{"score":9.9,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","source":"HashiCorp"},"assigner":"HashiCorp","products":["HashiCorp Tooling"],"affected":[{"vendor":"HashiCorp","product":"Tooling","defaultStatus":"unaffected","versions":[{"version":"0.42.0","status":"affected","lessThan":"2.0.4","changes":[{"at":"1.8.18","status":"unaffected"}],"versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/consul-k8s"}],"references":["https://discuss.hashicorp.com/t/hcsec-2026-50-consul-k8s-vulnerable-to-a-cross-namespace-authorization-bypass-in-component-acl-binding-rules/77915"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/110xxx/CVE-2026-110720.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-110720","state":"PUBLISHED","datePublished":"2026-10-26T18:38:14.209Z","dateUpdated":"2026-10-26T19:38:28.240Z","assignerShortName":"HashiCorp","assignerOrgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateReserved":"2026-10-14T14:44:47.621Z"},"containers":{"cna":{"title":"Consul-k8s vulnerable to a cross-namespace authorization bypass in component ACL binding rules","descriptions":[{"lang":"en","value":"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":[{"vendor":"HashiCorp","product":"Tooling","defaultStatus":"unaffected","versions":[{"version":"0.42.0","status":"affected","lessThan":"2.0.4","changes":[{"at":"1.8.18","status":"unaffected"}],"versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/consul-k8s"}],"references":[{"url":"https://discuss.hashicorp.com/t/hcsec-2026-50-consul-k8s-vulnerable-to-a-cross-namespace-authorization-bypass-in-component-acl-binding-rules/77915"}],"metrics":[{"cvssV3_1":{"baseScore":9.9,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"HashiCorp","orgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateUpdated":"2026-10-26T18:38:14.209Z"},"credits":[{"lang":"en","value":"This issue was reported to HashiCorp by Elias Hasas (GitHub: zer0d4y5)."}],"impacts":[{"capecId":"CAPEC-1","descriptions":[{"lang":"en","value":"CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs"}]}],"source":{"advisory":"HCSEC-2026-50","discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-110720","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-10-26T19:06:05.963836Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-26T19:38:28.240Z"}}]}}}