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openstack-nova-compute: Arbitrary Host File Overwrite via Unconstrained qemu-img Format Handling in OpenStack Nova

🗓️ 13 Aug 2026 23:45:16Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 6 Views

Authenticated user exploits unconstrained qemu-img format handling in OpenStack Nova to overwrite arbitrary compute host files.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8noarchopenstack-nova1:20.6.2-2.20260317135026.8a24acd.el8ostopenstack-nova-1:20.6.2-2.20260317135026.8a24acd.el8ost.noarch.rpm
Red Hat Enterprise Linux8noarchopenstack-nova-api1:20.6.2-2.20260317135026.8a24acd.el8ostopenstack-nova-api-1:20.6.2-2.20260317135026.8a24acd.el8ost.noarch.rpm
Red Hat Enterprise Linux8noarchopenstack-nova-common1:20.6.2-2.20260317135026.8a24acd.el8ostopenstack-nova-common-1:20.6.2-2.20260317135026.8a24acd.el8ost.noarch.rpm
Red Hat Enterprise Linux8noarchopenstack-nova-compute1:20.6.2-2.20260317135026.8a24acd.el8ostopenstack-nova-compute-1:20.6.2-2.20260317135026.8a24acd.el8ost.noarch.rpm
Red Hat Enterprise Linux8noarchopenstack-nova-conductor1:20.6.2-2.20260317135026.8a24acd.el8ostopenstack-nova-conductor-1:20.6.2-2.20260317135026.8a24acd.el8ost.noarch.rpm
Red Hat Enterprise Linux8noarchopenstack-nova-console1:20.6.2-2.20260317135026.8a24acd.el8ostopenstack-nova-console-1:20.6.2-2.20260317135026.8a24acd.el8ost.noarch.rpm
Red Hat Enterprise Linux8noarchopenstack-nova-migration1:20.6.2-2.20260317135026.8a24acd.el8ostopenstack-nova-migration-1:20.6.2-2.20260317135026.8a24acd.el8ost.noarch.rpm
Red Hat Enterprise Linux8noarchopenstack-nova-novncproxy1:20.6.2-2.20260317135026.8a24acd.el8ostopenstack-nova-novncproxy-1:20.6.2-2.20260317135026.8a24acd.el8ost.noarch.rpm
Red Hat Enterprise Linux8noarchopenstack-nova-scheduler1:20.6.2-2.20260317135026.8a24acd.el8ostopenstack-nova-scheduler-1:20.6.2-2.20260317135026.8a24acd.el8ost.noarch.rpm
Red Hat Enterprise Linux8noarchopenstack-nova-serialproxy1:20.6.2-2.20260317135026.8a24acd.el8ostopenstack-nova-serialproxy-1:20.6.2-2.20260317135026.8a24acd.el8ost.noarch.rpm
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22 Aug 2026 08:40Current
5.5Medium risk
Vulners AI Score5.5
CVSS 3.18.2
EPSS0.00341
SSVC
6