Authentication Bypass in Navigator and Blue Planet Products
Priority MEDIUM 50CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00664 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| CIENA | Navigator NCS | 8.1 | — | No fix listed | CNA |
| CIENA | MCP | up to 8.0 | — | No fix listed | CNA |
| CIENA | Planner Plus OnPrem | up to 4.1 | — | No fix listed | CNA |
| Blue Planet | Inventory | up to 24.04.001; up to 23.12.401; up to 23.08.302; up to 23.04.701 | — | No fix listed | CNA |
| Blue Planet | Orchestration | up to 24.04.2; up to 23.12.3; up to 23.08.4; up to 23.04.2 | — | No fix listed | CNA |
| Blue Planet | Route Optimization & Analysis | up to 24.04.1.2-R; up to 23.12.1.6-R; up to 23.08.1.6-R; up to 23.04.P01-9-R | — | No fix listed | CNA |
| Blue Planet | Unified Assurance & Analytics | <=24.04 MR1; <=23.12 MR3; <=23.04. MR4 | — | No fix listed | CNA |
- Navigator NCS VendorCIENA Affected 8.1 Fixed in — No fix listed CNA
- MCP VendorCIENA Affected up to 8.0 Fixed in — No fix listed CNA
- Planner Plus OnPrem VendorCIENA Affected up to 4.1 Fixed in — No fix listed CNA
- Inventory VendorBlue Planet Affected up to 24.04.001; up to 23.12.401; up to 23.08.302; up to 23.04.701 Fixed in — No fix listed CNA
- Orchestration VendorBlue Planet Affected up to 24.04.2; up to 23.12.3; up to 23.08.4; up to 23.04.2 Fixed in — No fix listed CNA
- Route Optimization & Analysis VendorBlue Planet Affected up to 24.04.1.2-R; up to 23.12.1.6-R; up to 23.08.1.6-R; up to 23.04.P01-9-R Fixed in — No fix listed CNA
- Unified Assurance & Analytics VendorBlue Planet Affected <=24.04 MR1; <=23.12 MR3; <=23.04. MR4 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-5270
- 2026-10-03 Alias added: GHSA-rp4h-q5qj-wrcr
- 2026-10-05 EPSS moved to the 50th–90th percentile
References
More CIENA vulnerabilities
- TI-2026-04604 Navigator NCS and MCP System Accounts with Default Passwords CVSS 3.1CRITICAL 9.8
- TI-2026-04603 SFTP Server Authentication Weakness CVSS 3.1CRITICAL 9.1
- TI-2024-01865 SAML implementation allows privilege escalation CVSS 3.1CRITICAL 9.0
- TI-2026-04602 Unauthenticated Event Stream Exposure of Session Tokens in Navigator NCS CVSS 3.1HIGH 7.5
Sources
- CVE-2026-5270 · CVE Program
- CVE-2026-5270 · NVD
- FIRST EPSS
- GHSA-rp4h-q5qj-wrcr · GitHub Advisory Database · CC BY 4.0
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