CVE-2026-23556

oxenstored keeps quota related use counts across domain destruction

State: Published
Severity: 9.4 Critical
Published: Jul 9, 2026
Updated: Jul 9, 2026
Reserved: Jan 14, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	9.4 Critical	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	XEN

Weaknesses

CWE-281 Improper preservation of permissions

Affected Products

Product	Versions
oxenstoredXen	allAffected

References

https://xenbits.xen.org/xsa/advisory-483.html
http://www.openwall.com/lists/oss-security/2026/04/28/10
http://xenbits.xen.org/xsa/advisory-483.html

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