{"id":"CVE-2026-105608","state":"PUBLISHED","title":"Consul vulnerable to an authorization bypass in service mesh registration","description":"HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in service mesh proxy registration. This may allow a user with service write permission to apply Envoy escape-hatch configuration without the required mesh write permission. This vulnerability (CVE-2026-105608) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.","publishedAt":"2026-10-26T17:52:33.021Z","updatedAt":"2026-10-26T19:38:29.607Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"HashiCorp"},"assigner":"HashiCorp","products":["HashiCorp Consul","HashiCorp Consul Enterprise"],"affected":[{"vendor":"HashiCorp","product":"Consul","defaultStatus":"unaffected","versions":[{"version":"2.0.4","status":"affected","lessThan":"2.1.0","versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/consul"},{"vendor":"HashiCorp","product":"Consul Enterprise","defaultStatus":"unaffected","versions":[{"version":"2.0.4","status":"affected","lessThan":"2.1.0","changes":[{"at":"1.21.18","status":"affected"},{"at":"1.21.19","status":"unaffected"},{"at":"1.22.12","status":"affected"}],"versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/consul"}],"references":["https://discuss.hashicorp.com/t/hcsec-2026-47-consul-vulnerable-to-an-authorization-bypass-in-service-mesh-registration/77912"],"weaknesses":["CWE-178"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/105xxx/CVE-2026-105608.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-105608","state":"PUBLISHED","datePublished":"2026-10-26T17:52:33.021Z","dateUpdated":"2026-10-26T19:38:29.607Z","assignerShortName":"HashiCorp","assignerOrgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateReserved":"2026-10-05T16:15:56.816Z"},"containers":{"cna":{"title":"Consul vulnerable to an authorization bypass in service mesh registration","descriptions":[{"lang":"en","value":"HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in service mesh proxy registration. This may allow a user with service write permission to apply Envoy escape-hatch configuration without the required mesh write permission. This vulnerability (CVE-2026-105608) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19."}],"affected":[{"vendor":"HashiCorp","product":"Consul","defaultStatus":"unaffected","versions":[{"version":"2.0.4","status":"affected","lessThan":"2.1.0","versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/consul"},{"vendor":"HashiCorp","product":"Consul Enterprise","defaultStatus":"unaffected","versions":[{"version":"2.0.4","status":"affected","lessThan":"2.1.0","changes":[{"at":"1.21.18","status":"affected"},{"at":"1.21.19","status":"unaffected"},{"at":"1.22.12","status":"affected"}],"versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/consul"}],"references":[{"url":"https://discuss.hashicorp.com/t/hcsec-2026-47-consul-vulnerable-to-an-authorization-bypass-in-service-mesh-registration/77912"}],"metrics":[{"cvssV3_1":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-178","description":"CWE-178: Improper Handling of Case Sensitivity","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"HashiCorp","orgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateUpdated":"2026-10-26T17:53:16.484Z"},"credits":[{"lang":"en","value":"This issue was reported to HashiCorp by Immad Sahin of ZeroTrail and Yonghwa Lee of Theori."}],"impacts":[{"capecId":"CAPEC-267","descriptions":[{"lang":"en","value":"CAPEC-267: Leverage Alternate Encoding"}]}],"source":{"advisory":"HCSEC-2026-47","discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-105608","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-10-26T19:05:41.796579Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-26T19:38:29.607Z"}}]}}}