CVE-2026-41323
Kyverno: ServiceAccount token leaked to external servers via apiCall service URL
8.1
HIGH
CVSS 3.1
EPSS 0.56%
描述
Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.18.0, 1.17.2, and 1.16.4, Kyverno's apiCall feature in ClusterPolicy automatically attaches the admission controller's ServiceAccount token to outgoing HTTP requests. The service URL has no validation — it can point anywhere, including attacker-controlled servers. Since the admission controller SA has permissions to patch webhook configurations, a stolen token leads to full cluster compromise. Versions 1.18.0, 1.17.2, and 1.16.4 patch the issue.
如何修補 CVE-2026-41323
要修補 CVE-2026-41323,請將受影響套件升級到下列已修補版本。
- —升級至 1.16.4 或更新版本
- —升級至 1.17.0 或更新版本
- —升級至 1.17.0 或更新版本
CVE-2026-41323 正在被利用嗎?
低 — EPSS 為 0.6%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 1.16.4, >= 1.17.0, < 1.17.2
- from 0, < 1.17.0
- from 0, < 1.17.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |