CVE-2026-83535CWE-208

CVE-2026-83535

High · published October 12, 2026

CVSS v3.1
7.4
EPSS
0%
Percentile
19.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00282 · 19.6th percentile
Weakness
CWE-208 · Observable Timing Discrepancy
Published
2026-10-12T23:16Z
References (2)
EPSS history
Timeline
  • 14 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 12 OCT 18:50Z
    Openstack-network-exporter: basic-auth uses plaintext password storage and non-constant-time comparison
    cvelistv5
  • 12 OCT 18:50Z
    Openstack-network-exporter: basic-auth uses plaintext password storage and non-constant-time comparison
    cvelistv5