{"id":"CVE-2026-50287","aliases":["GHSA-63gr-g7jc-v8rg"],"url":"https://o3.security/vulnerability/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.","published":"2026-06-12T18:44:48.313Z","modified":"2026-08-07T11:31:19.524503571Z","cvss":null,"epss":{"score":0.00359,"percentile":0.28586,"asOf":"2026-08-10"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@agenticmail/mcp","fixedVersion":"0.9.27"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:31:19.524503571Z"}}