CVE-2026-83535

High

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.

SeverityHigh
CVSS7.4
Exploit probability—
ProductRed Hat OpenStack Platform 18.0
PublishedOct 12, 2026
First seenOct 12, 2026
Weakness typeCWE-208CWE-208

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
Red Hat Red Hat OpenStack Platform 18.0No range specified—

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