CVE-2026-9804: Kubevirt: kubevirt: vmexport directory symlink escape enables exporter pod file read

highCVSS 7.7CVE-2026-9804

CSIRTS triage

vendor: KubeVirt product: KubeVirt Path traversal Information disclosure

What: A symlink escape vulnerability in vmexport allows the exporter pod to read arbitrary files from the host filesystem.
Who is affected: Kubernetes clusters running KubeVirt with vmexport functionality exposed to untrusted users.
Urgency: High severity (CVSS 7.7) enabling unauthorized file access; not currently exploited.
Action: Upgrade KubeVirt to a patched version or restrict vmexport pod file system permissions.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch KubeVirt

Get an email when a new KubeVirt advisory drops — max one per day, one-click unsubscribe.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.7
Published: 2026-08-06
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-9804

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-98040.52% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-9804	coverage & exploitation status	NVD · CVE.org

Recent advisories for Kubevirt

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

criticalCVE-2026-71566: FakeFish handles incoming credentials by passing them down to scripts. This works for real har…nvd · 2026-08-17
highCVE-2026-13622: A symlink following vulnerability was found in KubeVirt's virt-handler migration proxy. During…nvd · 2026-08-12
mediumCVE-2025-64436: KubeVirt Excessive Role Permissions Could Enable Unauthorized VMI Migrations Between Nodesmsrc · 2026-08-06
mediumCVE-2026-6383: Kubevirt: kubevirt: unauthorized subresource access due to improper rbac evaluationmsrc · 2026-08-06
mediumCVE-2026-13434: A flaw was found in KubeVirt's network annotation generator. When a tenant creates a VirtualMa…nvd · 2026-06-26
highCVE-2026-13325: A flaw was found in KubeVirt's migration proxy. When spec.configuration.migrations.disableTLS …nvd · 2026-06-26