{"id":"CVE-2026-16326","state":"PUBLISHED","title":"consul-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode","description":"In consul-mcp-server, versions 0.1.0 up to 0.1.3 did not properly isolate session state in stateless mode, which may allow one client's Consul authentication token to be used for subsequent requests from other clients. This vulnerability (CVE-2026-16326) is fixed in consul-mcp-server 0.1.4.","publishedAt":"2026-07-29T18:40:08.796Z","updatedAt":"2026-07-29T19:10:11.027Z","severity":{"score":10,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L","source":"HashiCorp"},"assigner":"HashiCorp","products":["HashiCorp Tooling"],"affected":[{"vendor":"HashiCorp","product":"Tooling","defaultStatus":"unaffected","versions":[{"version":"0.1.0","status":"affected","lessThan":"0.1.4","versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/consul-mcp-server"}],"references":["https://discuss.hashicorp.com/t/hcsec-2026-24-multiple-vulnerabilities-impacting-hashicorp-consul-mcp-server/77612"],"weaknesses":["CWE-488"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/16xxx/CVE-2026-16326.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-16326","state":"PUBLISHED","datePublished":"2026-07-29T18:40:08.796Z","dateUpdated":"2026-07-29T19:10:11.027Z","assignerShortName":"HashiCorp","assignerOrgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateReserved":"2026-07-20T17:50:16.465Z"},"containers":{"cna":{"title":"consul-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode","descriptions":[{"lang":"en","value":"In consul-mcp-server, versions 0.1.0 up to 0.1.3 did not properly isolate session state in stateless mode, which may allow one client's Consul authentication token to be used for subsequent requests from other clients. This vulnerability (CVE-2026-16326) is fixed in consul-mcp-server 0.1.4."}],"affected":[{"vendor":"HashiCorp","product":"Tooling","defaultStatus":"unaffected","versions":[{"version":"0.1.0","status":"affected","lessThan":"0.1.4","versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/consul-mcp-server"}],"references":[{"url":"https://discuss.hashicorp.com/t/hcsec-2026-24-multiple-vulnerabilities-impacting-hashicorp-consul-mcp-server/77612"}],"metrics":[{"cvssV3_1":{"baseScore":10,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-488","description":"CWE-488: Exposure of Data Element to Wrong Session","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"HashiCorp","orgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateUpdated":"2026-07-29T18:40:08.796Z"},"credits":[{"lang":"en","value":"This issue was reported by an internal HashiCorp team."}],"impacts":[{"capecId":"CAPEC-60","descriptions":[{"lang":"en","value":"CAPEC-60: Reusing Session IDs (Session Replay)"}]}],"source":{"advisory":"HCSEC-2026-24","discovery":"INTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-29T19:10:01.220224Z","id":"CVE-2026-16326","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-29T19:10:11.027Z"}}]}}}