---
id: CVE-2026-83536
title: A flaw was found in openstack-network-exporter
summary: >-
  A flaw was found in openstack-network-exporter. The HTTP server within the
  component is configured without essential timeout settings, such as
  ReadHeaderTimeout. This vulnerability allows an unauthenticated, remote
  attacker to initiate m…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-400
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T19:16:39.997'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-83536'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-83536'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2526401'
    label: secalert@redhat.com
tags:
  - nvd
ingestedAt: '2026-10-12T20:03:12.357Z'
---

## Overview

A flaw was found in openstack-network-exporter. The HTTP server within the component is configured without essential timeout settings, such as ReadHeaderTimeout. This vulnerability allows an unauthenticated, remote attacker to initiate multiple slow HTTP header connections. By trickling header bytes, the attacker can exhaust server resources, specifically file descriptors, leading to a Denial of Service (DoS) that prevents legitimate Prometheus metric scraping and alerting.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.