CVE-2026-63623 (GCVE-0-2026-63623)

Vulnerability from cvelistv5 – Published: 2026-08-10 16:43 – Updated: 2026-08-10 21:10
VLAI
Title
Libvirt: information disclosure via world-readable storage volume images during clone/convert
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 18:30 UTC
CWE
  • CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-63623 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2513066 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-07-30 00:00
Credits
Red Hat would like to thank HE WEI (gikaku) for reporting this issue.
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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