CVE-2026-83536CWE-400denial-of-service

CVE-2026-83536

Medium · published October 12, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
23.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00314 · 23.1th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-10-12T23:16Z
References (2)
https://access.redhat.com/security/cve/CVE-2026-83536 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2526401 · [email protected]
EPSS history
Timeline
  • 14 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 12 OCT 18:50Z
    Openstack-network-exporter: http.server has no readheadertimeout / readtimeout (slowloris)
    cvelistv5
  • 12 OCT 18:50Z
    Openstack-network-exporter: http.server has no readheadertimeout / readtimeout (slowloris)
    cvelistv5