{"id":"CVE-2026-5270","state":"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.","publishedAt":"2026-07-14T22:24:34.750Z","updatedAt":"2026-07-15T12:39:32.248Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"Ciena","products":["CIENA Navigator NCS","CIENA MCP","CIENA Planner Plus OnPrem","Blue Planet Inventory","Blue Planet Orchestration","Blue Planet Route Optimization & Analysis","Blue Planet Unified Assurance & Analytics"],"affected":[{"vendor":"CIENA","product":"Navigator NCS","defaultStatus":"unaffected","versions":[{"version":"8.1","status":"affected"}]},{"vendor":"CIENA","product":"MCP","defaultStatus":"unaffected","versions":[{"version":"<= 8.0","status":"affected"}]},{"vendor":"CIENA","product":"Planner Plus OnPrem","defaultStatus":"unaffected","versions":[{"version":"<= 4.1","status":"affected"}]},{"vendor":"Blue Planet","product":"Inventory","defaultStatus":"unaffected","versions":[{"version":"<=24.04.001","status":"affected"},{"version":"<=23.12.401","status":"affected"},{"version":"<=23.08.302","status":"affected"},{"version":"<=23.04.701","status":"affected"}]},{"vendor":"Blue Planet","product":"Orchestration","defaultStatus":"unaffected","versions":[{"version":"<=24.04.2","status":"affected"},{"version":"<=23.12.3","status":"affected"},{"version":"<=23.08.4","status":"affected"},{"version":"<=23.04.2","status":"affected"}]},{"vendor":"Blue Planet","product":"Route Optimization & Analysis","defaultStatus":"unaffected","versions":[{"version":"<=24.04.1.2-R","status":"affected"},{"version":"<=23.12.1.6-R","status":"affected"},{"version":"<=23.08.1.6-R","status":"affected"},{"version":"<=23.04.P01-9-R","status":"affected"}]},{"vendor":"Blue Planet","product":"Unified Assurance & Analytics","defaultStatus":"unaffected","versions":[{"version":"<=24.04 MR1","status":"affected"},{"version":"<=23.12 MR3","status":"affected"},{"version":"<=23.04. MR4","status":"affected"}]}],"references":["https://www.ciena.com/product-security"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/5xxx/CVE-2026-5270.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-5270","state":"PUBLISHED","datePublished":"2026-07-14T22:24:34.750Z","dateUpdated":"2026-07-15T12:39:32.248Z","assignerShortName":"Ciena","assignerOrgId":"7bd90cf1-1651-495e-9ae8-9415fb3c9feb","dateReserved":"2026-03-31T19:44:41.118Z"},"containers":{"cna":{"title":"Authentication Bypass in Navigator and Blue Planet Products","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"CIENA","product":"Navigator NCS","defaultStatus":"unaffected","versions":[{"version":"8.1","status":"affected"}]},{"vendor":"CIENA","product":"MCP","defaultStatus":"unaffected","versions":[{"version":"<= 8.0","status":"affected"}]},{"vendor":"CIENA","product":"Planner Plus OnPrem","defaultStatus":"unaffected","versions":[{"version":"<= 4.1","status":"affected"}]},{"vendor":"Blue Planet","product":"Inventory","defaultStatus":"unaffected","versions":[{"version":"<=24.04.001","status":"affected"},{"version":"<=23.12.401","status":"affected"},{"version":"<=23.08.302","status":"affected"},{"version":"<=23.04.701","status":"affected"}]},{"vendor":"Blue Planet","product":"Orchestration","defaultStatus":"unaffected","versions":[{"version":"<=24.04.2","status":"affected"},{"version":"<=23.12.3","status":"affected"},{"version":"<=23.08.4","status":"affected"},{"version":"<=23.04.2","status":"affected"}]},{"vendor":"Blue Planet","product":"Route Optimization & Analysis","defaultStatus":"unaffected","versions":[{"version":"<=24.04.1.2-R","status":"affected"},{"version":"<=23.12.1.6-R","status":"affected"},{"version":"<=23.08.1.6-R","status":"affected"},{"version":"<=23.04.P01-9-R","status":"affected"}]},{"vendor":"Blue Planet","product":"Unified Assurance & Analytics","defaultStatus":"unaffected","versions":[{"version":"<=24.04 MR1","status":"affected"},{"version":"<=23.12 MR3","status":"affected"},{"version":"<=23.04. MR4","status":"affected"}]}],"references":[{"url":"https://www.ciena.com/product-security"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287 Improper Authentication","type":"CWE"}]}],"providerMetadata":{"shortName":"Ciena","orgId":"7bd90cf1-1651-495e-9ae8-9415fb3c9feb","dateUpdated":"2026-07-14T22:24:34.750Z"},"solutions":[{"lang":"en","value":"Ciena recommends upgrading to the latest\navailable remediated release. For additional details, refer to myciena.com for\ncurrent software versions, fixes, and security advisories.\n\n\n\n\n\n \n\n\n\n\n\nRemediation\nand Fixes: \n\n\n\n\n \n \n \n\n Products \n\n\n \n \n \n\nRemediated Version\n\n\n \n \n \n \n \n\nBP Inventory\n\n\n \n \n \n\n>=24.08, 24.04.100, 23.12.500, 23.08.400,\n 23.04.800\n\n\n \n \n \n \n \n\nBP Orchestration \n\n\n \n \n \n\n>=24.08, 24.04.3 MR3, 23.12.4 MR4,\n 23.08.5 MR5, \n\n 23.04.4 MR3\n\n\n \n \n \n \n \n\nBP Route Optimization & Analysis\n\n\n \n \n \n\n>=24.08, 24.04.2-3-R, 23.12.2.1-R, 23.08.2.-1-R, \n\n 23.04.P02-1-R\n\n\n \n \n \n \n \n\nBP Unified Assurance & Analytics \n\n\n \n \n \n\n>=24.08, 24.04.MR2, 23.12.MR4\n\n\n \n \n \n \n \n\nNavigator NCS\n\n\n \n \n \n\n>= 8.2, 8.1-P02\n\n\n \n \n \n \n \n\nMCP\n\n\n \n \n \n\n8.0-P04, 7.2-P07\n\n\n \n \n \n \n \n\nPlanner Plus OnPrem\n\n\n \n \n \n\n>= 4.2, 4.1-P01","supportingMedia":[{"type":"text/html","base64":false,"value":"

Ciena recommends upgrading to the latest\navailable remediated release. For additional details, refer to myciena.com for\ncurrent software versions, fixes, and security advisories.

\n\n

 

\n\n

Remediation\nand Fixes:

\n\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n
\n

 Products

\n 		\n

Remediated Version

\n
\n

BP Inventory

\n 		\n

>=24.08, 24.04.100, 23.12.500, 23.08.400,\n 23.04.800

\n
\n

BP Orchestration

\n 		\n

>=24.08, 24.04.3 MR3, 23.12.4 MR4,\n 23.08.5 MR5,
\n 23.04.4 MR3

\n
\n

BP Route Optimization & Analysis

\n 		\n

>=24.08, 24.04.2-3-R, 23.12.2.1-R, 23.08.2.-1-R,
\n 23.04.P02-1-R

\n
\n

BP Unified Assurance & Analytics

\n 		\n

>=24.08, 24.04.MR2, 23.12.MR4

\n
\n

Navigator NCS

\n 		\n

>= 8.2, 8.1-P02

\n
\n

MCP

\n 		\n

8.0-P04, 7.2-P07

\n
\n

Planner Plus OnPrem

\n 		\n

>= 4.2, 4.1-P01

\n
"}]}],"credits":[{"lang":"en","value":"Special thanks to the team at TDC NET for their contribution.","type":"finder"}],"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T12:39:26.968950Z","id":"CVE-2026-5270","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-15T12:39:32.248Z"}}]}}}