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OpenAdvisories
High · 7.5 CVE-2026-5267 EUVD-2026-87295GHSA-6mqq-ppj3-rm94

Unauthenticated Event Stream Exposure of Session Tokens in Navigator NCS

Published Sep 25, 2026 · Updated Sep 25, 2026 · Assigned by Ciena

Description

Ciena Navigator Network
Control Suite (NCS) contains an information exposure vulnerability in an
event-streaming API that does not properly enforce authentication. An
unauthenticated attacker with network access to the affected service could
access the event stream and potentially obtain sensitive information.

Affected products

VendorProductAffectedFixed
Ciena Navigator NCS 7.2 and any older release, 7.2-P01 through 7.2-P07, 8.0, 8.0-P01 through 8.0-P06A, 8.1, 8.1-P01 through 8.1-P06, 8.2, 8.2-P01 through 8.2-P06, 9.0, 9.0-P01 through 9.0-P05A, 9.1, 9.1-P01 through 9.1-P05, 9.2, 9.2-P01 through 9.2-P02, 10.0, 10.0-P01 through 10.0-P01B —

References