CVE-2026-63623
Libvirt: information disclosure via world-readable storage volume images during clone/convert
- State
- Published
- Severity
- 5.5 Medium
- Published
- Aug 10, 2026
- Updated
- Aug 10, 2026
- Reserved
- Jul 17, 2026
Description
A flaw was found in libvirt. During storage volume clone or convert operations, newly created volume images were temporarily world-readable. This was caused by the `qemu-img` utility running with overly permissive file creation settings, allowing any local user to read the full guest disk contents. This vulnerability could lead to sensitive information disclosure from guest virtual machines.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | redhat |
Weaknesses
- CWE-732 Incorrect Permission Assignment for Critical Resource
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat Enterprise Linux for NVIDIA 26Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-63623vdb-entry
- RHBZ#2513066issue-tracking
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