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OpenStack Compute (Nova) Denial of service due to improper validation of virtual size of QCOW2 image

🗓️ 06 Jul 2026 08:03:25Reported by Python Packaging AdvisoryType 
pypa
 pypa
🔗 github.com👁 3 Views

Nova DoS: QCOW2 size not validated when use_cow_images is false, enabling local users to exhaust disk.

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06 Jul 2026 08:03Current
6Medium risk
Vulners AI Score6
CVSS 21.9
EPSS0.00438
3