{"id":"CVE-2026-5270","aliases":["EUVD-2026-44573","GHSA-rp4h-q5qj-wrcr"],"status":"published","title":"Authentication Bypass in Navigator and Blue Planet Products","description":"An authentication bypass vulnerability exists in certain releases of Ciena Navigator Network Control Suite (NCS), Manage Control Plan (MCP), and Blue Planet products. The issue is caused by improper handling of HTTP request paths and headers, which allows an unauthenticated attacker to manipulate requests in a manner that bypasses authentication and associated audit logging controls.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00664,"percentile":0.52182,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2026-07-14T22:24:34Z","modified":"2026-07-15T20:08:02Z","products":[{"vendor":"blue planet","product":"inventory"},{"vendor":"blue planet","product":"orchestration"},{"vendor":"blue planet","product":"route optimization \u0026 analysis"},{"vendor":"blue planet","product":"unified assurance \u0026 analytics"},{"vendor":"ciena","product":"mcp"},{"vendor":"ciena","product":"navigator ncs"},{"vendor":"ciena","product":"planner plus onprem"},{"vendor":"dvladimirov","product":"mcp"},{"vendor":"hcl","product":"inventory"}],"references":[{"url":"https://www.ciena.com/product-security"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5270"},{"url":"https://github.com/advisories/GHSA-rp4h-q5qj-wrcr"}],"sources":{"cve":[{"id":"CVE-2026-5270","title":"Authentication Bypass in Navigator and Blue Planet Products","description":"An authentication bypass vulnerability exists in certain releases of Ciena Navigator Network Control Suite (NCS), Manage Control Plan (MCP), and Blue Planet products. The issue is caused by improper handling of HTTP request paths and headers, which allows an unauthenticated attacker to manipulate requests in a manner that bypasses authentication and associated audit logging controls.","status":"published","published":"2026-07-14T22:24:34.75Z","modified":"2026-07-15T12:39:32.248Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T13:39:39.001586Z"}],"euvd":[{"id":"EUVD-2026-44573","description":"An authentication bypass vulnerability exists in certain releases of Ciena Navigator Network Control Suite (NCS), Manage Control Plan (MCP), and Blue Planet products. The issue is caused by improper handling of HTTP request paths and headers, which allows an unauthenticated attacker to manipulate requests in a manner that bypasses authentication and associated audit logging controls.","status":"published","published":"2026-07-14T22:24:34Z","modified":"2026-07-15T12:39:32Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:19:53.678292Z"}],"ghsa":[{"id":"GHSA-rp4h-q5qj-wrcr","title":"An authentication bypass vulnerability exists in certain releases of Ciena Navigator Network...","description":"An authentication bypass vulnerability exists in certain releases of Ciena Navigator Network Control Suite (NCS), Manage Control Plan (MCP), and Blue Planet products. The issue is caused by improper handling of HTTP request paths and headers, which allows an unauthenticated attacker to manipulate requests in a manner that bypasses authentication and associated audit logging controls.","status":"published","published":"2026-07-15T00:31:43Z","modified":"2026-07-15T15:34:08Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:09:33.182129Z"}],"nvd":[{"id":"CVE-2026-5270","description":"An authentication bypass vulnerability exists in certain releases of Ciena Navigator Network Control Suite (NCS), Manage Control Plan (MCP), and Blue Planet products. The issue is caused by improper handling of HTTP request paths and headers, which allows an unauthenticated attacker to manipulate requests in a manner that bypasses authentication and associated audit logging controls.","status":"published","published":"2026-07-14T23:17:34.57Z","modified":"2026-07-15T20:08:02.787Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:29.879716Z"}]}}