---
id: CVE-2026-44919
aliases:
  - GHSA-4g73-w726-53h3
  - PYSEC-2026-2524
title: >-
  OpenStack Ironic: Pre-Validation Checksum Calculation allows Denial of Service
  (DoS) via Infinite Block Devices
summary: >-
  OpenStack Ironic: Pre-Validation Checksum Calculation allows Denial of Service
  (DoS) via Infinite Block Devices
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'
vendor: ironic
product: ironic
ecosystem: pip
affected:
  - ironic <= 36.0.0
published: '2026-05-14'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:45.422121645Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-4g73-w726-53h3'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-44919'
  - url: 'https://bugs.launchpad.net/ironic/+bug/2150332'
  - url: 'https://opendev.org/openstack/ironic'
  - url: >-
      https://opendev.org/openstack/ironic/commit/a3f6d735ac3642ab95b49142c7305f072ae748d0
  - url: 'https://security.openstack.org/ossa/OSSA-2026-013.html'
tags:
  - osv
  - pip
epss: 0.00466
epssPercentile: 0.39536
ingestedAt: '2026-07-13T18:57:52.588Z'
---

## Overview

In OpenStack Ironic through 35.x before a3f6d73, during image handling, an infinite loop in checksum calculations can occur via the file:///dev/zero URL.

## Affected packages

- `ironic <= 36.0.0`

## Remediation

Refer to the advisory for the patched release.