{"id":"CVE-2026-50287","summary":"Missing Authentication for Critical Function in @agenticmail/mcp","details":"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.","aliases":["GHSA-63gr-g7jc-v8rg"],"modified":"2026-08-12T03:51:43.053907236Z","published":"2026-06-12T18:44:48.313Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-306"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50287.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50287.json"},{"type":"ADVISORY","url":"https://github.com/agenticmail/agenticmail/security/advisories/GHSA-63gr-g7jc-v8rg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50287"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/agenticmail/agenticmail","events":[{"introduced":"0"},{"fixed":"c89156a63ba4260793624a6516ceef65edce12b0"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.9.27"}],"source":"AFFECTED_FIELD"}}],"versions":["v0.9.26","v0.9.25","v0.9.24","v0.9.23","v0.9.22","v0.9.21","v0.9.20","v0.9.19","v0.9.18","v0.9.17","v0.9.16","v0.9.15","v0.9.14","v0.9.13","v0.9.12","v0.9.11","v0.9.10","v0.9.9","v0.9.8","v0.9.7","v0.9.6","v0.9.5","v0.9.4","v0.9.3","v0.9.2","v0.9.1","v0.9.0","v0.8.36","v0.8.35","v0.8.34","v0.8.33","v0.8.32","v0.8.31","v0.8.30","v0.8.29","v0.8.28","v0.8.27","v0.8.26","v0.8.25","v0.8.24","v0.8.23","v0.8.22","v0.8.21","v0.8.19","v0.8.18","v0.8.16","v0.8.15","v0.8.14","v0.8.13","v0.8.12","v0.8.11","plugin-v0.8.10","v0.8.10","v0.8.9","v0.8.8","v0.8.7","v0.8.6","v0.8.5","v0.8.4","v0.8.3","v0.8.2","v0.5.62","v0.5.61","v0.5.60","v0.5.59","v0.5.58","v0.5.57","v0.5.56","v0.5.55","v0.5.54","v0.5.53","v0.5.52","v0.5.51","v0.5.50","v0.5.44","v0.5.43","v0.5.42","v0.5.41","v0.5.40","v0.5.39","v0.5.38","v0.5.37","v0.5.34","v0.4.0","v0.3.25"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50287.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}