CVE-2026-24708HIGH 8.2EPSS p30.4%
CVE-2026-24708CVE-2026-24708
Description
An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may 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. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected.
Scoring
| CVSS 3.1 | 8.2 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H |
| EPSS | 0.39% probability of exploitation · percentile 30.4% · 2026-06-18T12:00:27Z |
| Published | 2026-02-18 |
| Last modified | 2026-04-15 |
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Incorrect Resource Transfer Between Spherescwe-669 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.