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CVE-2026-7374

Kubevirt: kubevirt virt-handler: privilege escalation and node compromise via symlink following vulnerability

CVSS 3.1 9.9 CRITICALEUVD CVSS 3.1 9.9 CVSS 3.1 · [email protected] · Secondary 9.9 CRITICALCVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · Secondary 9.9 CRITICALCVSS_V3 Publisher rating CRITICALFixed by kubevirt.io/kubevirt 1.8.3Fixed by kubevirt.io/kubevirt 1.7.4Fixed by kubevirt.io/kubevirt 1.6.6osv · severity unknownFixed by kubevirt.io/kubevirt 1.6.6Fixed by kubevirt.io/kubevirt 1.7.4Fixed by kubevirt.io/kubevirt 1.8.3KEV status unknown
Original advisory

cve-program · CVE-2026-7374

Published

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.

Read the publisher's advisory

euvd · EUVD-2026-31824

Published

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.

Read the publisher's advisory

nvd · CVE-2026-7374

Published

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.

Read the publisher's advisory

osv · GHSA-7jcp-v9w4-wjmg

Published

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.

Read the publisher's advisory

osv · GO-2026-5848

Published

KubeVirt has a Link Following vulnerability in kubevirt.io/kubevirt

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-7374

Published

kubevirt

https://github.com/kubevirt/kubevirt

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "1.6.6",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "1.7.0",
                            "lessThan": "1.7.4",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "1.8.0",
                            "lessThan": "1.8.3",
                            "versionType": "semver"
                        }
                    ],
                    "packageName": "kubevirt",
                    "collectionURL": "https://github.com/kubevirt/kubevirt"
                }

container-native-virtualization/virt-handler

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Container Native Virtualization 4.12",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "container-native-virtualization/virt-handler",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "1779375376",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:container_native_virtualization:4.12::el8"
                    ]
                }

container-native-virtualization/virt-handler-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Container Native Virtualization 4.13",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "container-native-virtualization/virt-handler-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "1778999881",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:container_native_virtualization:4.13::el9"
                    ]
                }

container-native-virtualization/virt-handler-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Container Native Virtualization 4.14",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "container-native-virtualization/virt-handler-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "1779321599",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:container_native_virtualization:4.14::el9"
                    ]
                }

container-native-virtualization/virt-handler-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Container Native Virtualization 4.15",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "container-native-virtualization/virt-handler-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "1778859977",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:container_native_virtualization:4.15::el9"
                    ]
                }

container-native-virtualization/virt-handler-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Container Native Virtualization 4.16",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "container-native-virtualization/virt-handler-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "1778861274",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:container_native_virtualization:4.16::el9"
                    ]
                }

container-native-virtualization/virt-handler-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Container Native Virtualization 4.17",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "container-native-virtualization/virt-handler-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "1779174925",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:container_native_virtualization:4.17::el9"
                    ]
                }

container-native-virtualization/virt-handler-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Container Native Virtualization 4.18",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "container-native-virtualization/virt-handler-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "1778887155",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:container_native_virtualization:4.18::el9"
                    ]
                }

container-native-virtualization/virt-handler-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Container Native Virtualization 4.19",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "container-native-virtualization/virt-handler-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "1779289071",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:container_native_virtualization:4.19::el9"
                    ]
                }

container-native-virtualization/virt-handler-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Container Native Virtualization 4.20",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "container-native-virtualization/virt-handler-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "1779288737",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:container_native_virtualization:4.20::el9"
                    ]
                }

container-native-virtualization/virt-handler-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Container Native Virtualization 4.21",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "container-native-virtualization/virt-handler-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "1779420069",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:container_native_virtualization:4.21::el9"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-31824

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: May 26, 2026, 1:14:53 PM

dateUpdated: Sep 10, 2026, 12:05:01 PM

13 related source bulletins · separate from aliases

RHSA-2026:20736: Red Hat Security Advisory: OpenShift Virtualization v4.18 Images

CVE-2026-7374

SUSE-SU-2026:2077-1: Security update for kubevirt

CVE-2026-7374

msrc_CVE-2026-7374: Kubevirt: kubevirt virt-handler: privilege escalation and node compromise via symlink following vulnerability

CVE-2026-7374

RHSA-2026:20763: Red Hat Security Advisory: OpenShift Virtualization v4.17 Images

CVE-2026-7374

RHSA-2026:20890: Red Hat Security Advisory: OpenShift Virtualization v4.14 Images

CVE-2026-7374

RHSA-2026:20782: Red Hat Security Advisory: OpenShift Virtualization v4.20 Images

CVE-2026-7374

RHSA-2026:20886: Red Hat Security Advisory: OpenShift Virtualization v4.13 Images

CVE-2026-7374

RHSA-2026:20975: Red Hat Security Advisory: OpenShift Virtualization v4.16 Images

CVE-2026-7374

RHSA-2026:20866: Red Hat Security Advisory: OpenShift Virtualization v4.15 Images

CVE-2026-7374

WID-SEC-W-2026-1680: Red Hat OpenShift Virtualization: Schwachstelle ermöglicht Privilegieneskalation

CVE-2026-7374

RHSA-2026:20720: Red Hat Security Advisory: OpenShift Virtualization v4.21 Images

CVE-2026-7374

RHSA-2026:20767: Red Hat Security Advisory: OpenShift Virtualization v4.19 Images

CVE-2026-7374

RHSA-2026:20825: Red Hat Security Advisory: OpenShift Virtualization v4.12 Images

CVE-2026-7374

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-7374

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Awaiting Analysis

Weakness classifications: CWE-59

Original publisher date fields

published: 2026-05-26T14:16:40.717

lastModified: 2026-09-10T13:20:31.720

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-7jcp-v9w4-wjmg

Published

kubevirt.io/kubevirt

Go

SEMVER · introduced 1.8.0-alpha.0 → fixed 1.8.3

kubevirt.io/kubevirt

Go

SEMVER · introduced 1.7.0-alpha.0 → fixed 1.7.4

kubevirt.io/kubevirt

Go

SEMVER · introduced 0 → fixed 1.6.6

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GO-2026-5848

Published

kubevirt.io/kubevirt

Go

SEMVER · introduced 0 → fixed 1.6.6 → introduced 1.7.0-alpha.0 → fixed 1.7.4 → introduced 1.8.0-alpha.0 → fixed 1.8.3

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 15 Nov 03:49 UTC · 252 of 275 readable · 247 fully read · documentation 469/469 current

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