{"id":"CVE-2026-50287","state":"PUBLISHED","title":"Missing Authentication for Critical Function in @agenticmail/mcp","description":"AgenticMail gives AI agents real email addresses and phone numbers. Prior to version 0.9.27, @agenticmail/mcp exposes a Streamable HTTP transport when started with --http or MCP_HTTP=1. In that mode, the /mcp endpoint accepts requests without any HTTP authentication layer. A remote client can initialize a session and call tools directly. This issue has been patched in version 0.9.27.","publishedAt":"2026-06-12T18:44:48.313Z","updatedAt":"2026-06-15T18:18:24.876Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["agenticmail agenticmail"],"affected":[{"vendor":"agenticmail","product":"agenticmail","versions":[{"version":"< 0.9.27","status":"affected"}]}],"references":["https://github.com/agenticmail/agenticmail/security/advisories/GHSA-63gr-g7jc-v8rg"],"weaknesses":["CWE-306"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/50xxx/CVE-2026-50287.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50287","state":"PUBLISHED","datePublished":"2026-06-12T18:44:48.313Z","dateUpdated":"2026-06-15T18:18:24.876Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-04T16:26:05.985Z"},"containers":{"cna":{"title":"Missing Authentication for Critical Function in @agenticmail/mcp","descriptions":[{"lang":"en","value":"AgenticMail gives AI agents real email addresses and phone numbers. Prior to version 0.9.27, @agenticmail/mcp exposes a Streamable HTTP transport when started with --http or MCP_HTTP=1. In that mode, the /mcp endpoint accepts requests without any HTTP authentication layer. A remote client can initialize a session and call tools directly. This issue has been patched in version 0.9.27."}],"affected":[{"vendor":"agenticmail","product":"agenticmail","versions":[{"version":"< 0.9.27","status":"affected"}]}],"references":[{"url":"https://github.com/agenticmail/agenticmail/security/advisories/GHSA-63gr-g7jc-v8rg","name":"https://github.com/agenticmail/agenticmail/security/advisories/GHSA-63gr-g7jc-v8rg","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"CWE-306: Missing Authentication for Critical Function","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-12T18:44:48.313Z"},"source":{"advisory":"GHSA-63gr-g7jc-v8rg","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/agenticmail/agenticmail/security/advisories/GHSA-63gr-g7jc-v8rg","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-15T18:18:21.501687Z","id":"CVE-2026-50287","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-15T18:18:24.876Z"}}]}}}