Description
When oxenstored is tearing a domain down, the node data is cleaned up
but the usage counts are leaked.

When the domain ID is eventually reused, the new domain can create fewer
nodes before beeing deemed to be over quota.
Published: 2026-07-09
Score: 9.4 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 10 Jul 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Xen
Xen oxenstored
Vendors & Products Xen
Xen oxenstored

Thu, 09 Jul 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 09 Jul 2026 15:45:00 +0000

Type Values Removed Values Added
Description When oxenstored is tearing a domain down, the node data is cleaned up but the usage counts are leaked. When the domain ID is eventually reused, the new domain can create fewer nodes before beeing deemed to be over quota.
Title oxenstored keeps quota related use counts across domain destruction
Weaknesses CWE-281
References
Metrics cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: XEN

Published:

Updated: 2026-07-09T15:37:46.026Z

Reserved: 2026-01-14T13:07:36.961Z

Link: CVE-2026-23556

cve-icon Vulnrichment

Updated: 2026-07-09T15:06:25.267Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-16T20:00:06Z

Weaknesses