When oxenstored is tearing a domain down, the node data is cleaned up but the usage counts are...
Summary
Vulnerability reported (CVE-2026-23556). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
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.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-23556 has been found.
Risk of unauthorized operations or information disclosure.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "CVE-2026-23556" on the vendor's site.
CVE-2026-23556 — CWE-281
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-281) has been reported.
Check the vendor advisory for the affected versions.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで影響コンポーネントを特定する。
-
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2026-23556 xen
- Debian DEBIAN-CVE-2026-23556 xen Fixed in: 4.17.7-0+deb12u1
- Ubuntu UBUNTU-CVE-2026-23556 xen
References
- web nvd.nist.gov
- web security@xen.org
- web openwall.com
- web xenbits.xen.org
- web github.com