CVE-2026-23990
中文标题:
（暂无数据）
英文标题:
Flux Operator Web UI Impersonation Bypass via Empty OIDC Claims
漏洞描述
中文描述:
（暂无数据）
英文描述:
The Flux Operator is a Kubernetes CRD controller that manages the lifecycle of CNCF Flux CD and the ControlPlane enterprise distribution. Starting in version 0.36.0 and prior to version 0.40.0, a privilege escalation vulnerability exists in the Flux Operator Web UI authentication code that allows an attacker to bypass Kubernetes RBAC impersonation and execute API requests with the operator's service account privileges. In order to be vulnerable, cluster admins must configure the Flux Operator with an OIDC provider that issues tokens lacking the expected claims (e.g., `email`, `groups`), or configure custom CEL expressions that can evaluate to empty values. After OIDC token claims are processed through CEL expressions, there is no validation that the resulting `username` and `groups` values are non-empty. When both values are empty, the Kubernetes client-go library does not add impersonation headers to API requests, causing them to be executed with the flux-operator service account's credentials instead of the authenticated user's limited permissions. This can result in privilege escalation, data exposure, and/or information disclosure. Version 0.40.0 patches the issue.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| controlplaneio-fluxcd | flux-operator | >= 0.36.0, < 0.40.0 | - | - |
cpe:2.3:a:controlplaneio-fluxcd:flux-operator:>=_0.36.0,_<_0.40.0:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
参考链接
cve.org
cve.org
cve.org
cve.org
CVSS评分详情
3.1 (cna)
MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2026-23990 |
2026-01-22 03:19:50 | 2026-01-21 22:00:11 |
| NVD | nvd_CVE-2026-23990 |
2026-01-22 02:00:05 | 2026-01-21 22:00:14 |
版本与语言
安全公告
变更历史
查看详细变更
- data_sources: ['cve'] -> ['cve', 'nvd']