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Vulnerability record · CVE-2026-23556 · published 9 July 2026

CVE-2026-23556: When oxenstored is tearing a domain down, the node data is cleaned up but the usage counts are leaked.

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.

9.4 CVSS 4.0 Critical EPSS 0.17% · top 94.5% CWE-281 · CWE-281 Deferred
9.4CVSS 4.0 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
9 Jul 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2017-8543Windows Search memory handling flaw allows remote code executionWindows Search fails to properly handle objects in memory, allowing an unauthenticated remote attacker to execute code on affected Windows systems. T…KEVEPSS 74%analysed

Source: NIST National Vulnerability Database (record CVE-2026-23556), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.