CVE-2026-13622
Last modified
CVE-2026-13622 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A symlink following vulnerability was found in KubeVirt's virt-handler migration proxy. During live migration, virt-handler dials Unix sockets inside the target virt-launcher pod via /proc/<pid>/root/ paths using net.Dial() without symlink protection. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
Description
A symlink following vulnerability was found in KubeVirt's virt-handler migration proxy. During live migration, virt-handler dials Unix sockets inside the target virt-launcher pod via /proc/<pid>/root/ paths using net.Dial() without symlink protection. These socket paths reside in qemu-owned directories writable by the virt-launcher user. An attacker with namespace edit and pods/exec permissions can replace a migration proxy socket with a symlink to the host CRI-O socket. Because virt-handler runs as root in the host mount namespace, absolute symlink targets resolve against the host filesystem, and the bidirectional io.Copy proxy relays attacker-controlled bytes to the container runtime, enabling full node compromise.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Container Native Virtualization 4.12 | All versions |
| Red Hat | Red Hat Container Native Virtualization 4.13 | All versions |
| Red Hat | Red Hat Container Native Virtualization 4.14 | All versions |
| Red Hat | Red Hat Container Native Virtualization 4.15 | All versions |
| Red Hat | Red Hat Container Native Virtualization 4.16 | All versions |
| Red Hat | Red Hat Container Native Virtualization 4.17 | All versions |
| Red Hat | Red Hat Container Native Virtualization 4.18 | All versions |
| Red Hat | Red Hat Container Native Virtualization 4.19 | All versions |
| Red Hat | Red Hat Container Native Virtualization 4.20 | All versions |
| Red Hat | Red Hat Container Native Virtualization 4.21 | All versions |
| Red Hat | Red Hat Container Native Virtualization 4.22 | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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