CVE-2026-83536

medium

Description

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.

References

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-97777

https://bugzilla.redhat.com/show_bug.cgi?id=2526401

https://access.redhat.com/security/cve/CVE-2026-83536

Details

Source: Mitre, NVD

Published: 2026-10-12

Updated: 2026-10-15

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Severity: Medium

EPSS

EPSS: 0.00314