CVE-2026-7374: KubeVirt has a Link Following vulnerability
A flaw was found in KubeVirt's virt-handler component. This vulnerability allows an authenticated OpenShift user with edit permissions in a single namespace to exploit improper symlink validation when connecting to virtual machine console sockets. By replacing the console socket with a symlink to the host's container runtime (CRI-O) socket, an attacker can hijack virt-handler's privileged connection.
Published May 26, 2026 · Updated Jun 30, 2026
Affected packages
kubevirt.io/kubevirt
- Ecosystem
- Go
- Affected
- >= 1.8.0-alpha.0, < 1.8.3
- Fixed in
- 1.8.3
- Check
go list -m kubevirt.io/kubevirt
kubevirt.io/kubevirt
- Ecosystem
- Go
- Affected
- >= 1.7.0-alpha.0, < 1.7.4
- Fixed in
- 1.7.4
- Check
go list -m kubevirt.io/kubevirt
kubevirt.io/kubevirt
- Ecosystem
- Go
- Affected
- < 1.6.6
- Fixed in
- 1.6.6
- Check
go list -m kubevirt.io/kubevirt
Advisory details
From the GitHub Advisory Database (CC BY 4.0).
A flaw was found in KubeVirt's virt-handler component. This vulnerability allows an authenticated OpenShift user with edit permissions in a single namespace to exploit improper symlink validation when connecting to virtual machine console sockets. By replacing the console socket with a symlink to the host's container runtime (CRI-O) socket, an attacker can hijack virt-handler's privileged connection. This enables the attacker to access any Unix socket on the host, potentially leading to full control of the node and the entire cluster.
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-7374
- https://access.redhat.com/security/cve/CVE-2026-7374
- https://bugzilla.redhat.com/show_bug.cgi?id=2463728
- https://access.redhat.com/errata/RHSA-2026:20720
- https://access.redhat.com/errata/RHSA-2026:20736
- https://access.redhat.com/errata/RHSA-2026:20763
- https://access.redhat.com/errata/RHSA-2026:20782
- https://access.redhat.com/errata/RHSA-2026:20825
- https://access.redhat.com/errata/RHSA-2026:20866
- https://access.redhat.com/errata/RHSA-2026:20886
- https://access.redhat.com/errata/RHSA-2026:20890
- https://access.redhat.com/errata/RHSA-2026:20975
- https://access.redhat.com/errata/RHSA-2026:20767
- https://github.com/kubevirt/kubevirt/pull/17916
- https://github.com/kubevirt/kubevirt/commit/011eef8129e2c21e0ea496f283ee1676009bc757
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7374.json
- https://github.com/advisories/GHSA-7jcp-v9w4-wjmg
How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology