#VU122995 Allocation of resources without limits or throttling in Openstack Nova - CVE-2026-24708
Published: February 17, 2026
Vulnerability identifier: #VU122995
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-24708
CWE-ID: CWE-770
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Openstack Nova
Openstack Nova
Software vendor:
Openstack
Openstack
Description
The vulnerability allows a local user to perform a denial of service attack.
The vulnerability exists due to the application calls qemu-img without format restrictions for resize. A local user can write malicious QCOW header to a root or ephemeral disk and then trigger a resize to convince Nova’s flat image backend to call qemu-img without a format restriction resulting in an unsafe image resize operation that could destroy data on the host system.
Remediation
Install updates from vendor's website.