CVE-2026-40868
kyverno apicall servicecall implicit bearer token injection leaks kyverno serviceaccount token
描述
Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to 1.16.4, kyverno’s apiCall servicecall helper implicitly injects Authorization: Bearer ... using the kyverno controller serviceaccount token when a policy does not explicitly set an Authorization header. Because context.apiCall.service.url is policy-controlled, this can send the kyverno serviceaccount token to an attacker-controlled endpoint (confused deputy). Namespaced policies are blocked from servicecall usage by the namespaced urlPath gate in pkg/engine/apicall/apiCall.go, so this report is scoped to ClusterPolicy and global context usage. This vulnerability is fixed in 1.16.4.
如何修補 CVE-2026-40868
要修補 CVE-2026-40868,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-2026-40868 正在被利用嗎?
低 — EPSS 為 0.3%,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
- 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 |