GHSA-cp96-jpmq-xrr2 · 深刻度： high · エコシステム： go — On a compromised node, the virt-handler service account can be used to modify all node specs
KubeVirt is a virtual machine management add-on for Kubernetes. In versions 0.59.0 and prior, if a malicious user has taken over a Kubernetes node where virt-handler (the KubeVirt node-daemon) is running, the virt-handler service account can be used to modify all node specs. This can be misused to lure-in system-level-privileged components which can, for instance, read all secrets on the cluster, or can exec into pods on other nodes. This way, a compromised node can be used to elevate privileges beyond the node until potentially having full privileged access to the whole cluster. The simplest way to exploit this, once a user could compromise a specific node, is to set with the virt-handler service account all other nodes to unschedulable and simply wait until system-critical components with high privileges appear on its node. No patches are available as of time of publication. As a workaround, gatekeeper users can add a webhook which will block the `virt-handler` service account to modify the spec of a node.
総合評価: CVE-2023-26484 は中リスク（48.7/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.61%、44 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.24% | 0.61% | +0.37% |
| 2 | 2026-04-27 | 0.27% | 0.24% | -0.03% |
| 3 | 2025-11-21 | — | 0.27% | — |
EPSS の全履歴 （全 10 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 8.2 | 3.1 | HIGH |
|
1.8 | 5.8 | [email protected] |
| 8.2 | 3.1 | HIGH |
|
1.8 | 5.8 | [email protected] |
GHSA-cp96-jpmq-xrr2 · 深刻度： high · エコシステム： go — On a compromised node, the virt-handler service account can be used to modify all node specs
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2023-26484 |
suse
|
high | CVE-2023-26484 severity important: SUSE including 36 source package names (kubevirt, kubevirt-container-disk-0.54.0-150400.3.13.1, …), 53 product×package rows across 15 product lines (SUSE Linux Enterprise Micro 5.3, SUSE Linux Enterprise Micro 5.4, … (15 product lines)): Fixed 47, Known Not Affected 6. | https://www.suse.com/security/cve/CVE-2023-26484/ |
| URL | タグ |
|---|---|
| https://github.com/kubevirt/kubevirt/issues/9109 | Issue Tracking Third Party Advisory |
| https://github.com/kubevirt/kubevirt/security/advisories/GHSA-cp96-jpmq-xrr2 | Mitigation Vendor Advisory |