CVE-2026-83535: Observable Timing Discrepancy in Red Hat Red Hat OpenStack Platform 18.0
Description
A flaw was found in openstack-network-exporter. When an operator configures user authentication but omits or misconfigures Transport Layer Security (TLS), the basic authentication mechanism is silently bypassed. This fail-open design allows an adjacent network attacker to access sensitive Open vSwitch (OVS) and Open Virtual Network (OVN) dataplane metrics without credentials. Consequently, an attacker can enumerate bridge names, port counters, OVN controller state, and host topology, leading to information disclosure.
CVSS v3.1
Score 7.4high
Affected software
Red Hat
Red Hat OpenStack Platform 18.0
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-08-31T16:53:08.479Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-83535","vendor":"Red Hat"}]
Threat ID: 6acd2f272cdf04f656c3e8c9
Added to database: 10/12/2026, 19:04:07 UTC
Last updated: 10/12/2026, 19:04:07 UTC
Views: 1
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