CVE-2026-23990 (CNNVD-202601-3331)

MEDIUM
中文标题:
flux-operator 安全漏洞
英文标题:
Flux Operator Web UI Impersonation Bypass via Empty OIDC Claims
CVSS分数: 5.3
发布时间: 2026-01-21 22:25:57
漏洞类型: 其他
状态: PUBLISHED
数据质量分数: 0.40
数据版本: v3
漏洞描述
中文描述:

flux-operator是ControlPlane Enterprise for Flux CD开源的一个生命周期管理软件。 flux-operator 0.36.0版本至0.40.0之前版本存在安全漏洞，该漏洞源于Web UI身份验证代码未验证生成的username和groups值是否为空，可能导致权限提升。

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:
CWE-862 CWE-269
标签:
（暂无数据）
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:
（暂无数据）
英文解决方案:
（暂无数据）
临时解决方案:
（暂无数据）
参考链接
https://github.com/controlplaneio-fluxcd/flux-operator/security/advisories/GHSA-4xh5-jcj2-ch8q x_refsource_CONFIRM
cve.org
访问
https://github.com/controlplaneio-fluxcd/flux-operator/pull/610 x_refsource_MISC
cve.org
访问
https://github.com/controlplaneio-fluxcd/flux-operator/commit/084540424f6de8ba5d88fb1fd1e8472ba29afd7e x_refsource_MISC
cve.org
访问
https://github.com/controlplaneio-fluxcd/flux-operator/releases/tag/v0.40.0 x_refsource_MISC
cve.org
访问
CVSS评分详情
3.1 (cna)
MEDIUM
5.3
CVSS向量: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
机密性
HIGH
完整性
NONE
可用性
NONE
时间信息
发布时间:
2026-01-21 22:25:57
修改时间:
2026-01-21 22:25:57
创建时间:
2026-01-22 06:00:11
更新时间:
2026-01-27 06:00:17
利用信息
暂无可利用代码信息
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
CNNVD cnnvd_CNNVD-202601-3331 2026-01-26 02:10:04 2026-01-25 18:11:55
版本与语言
当前版本: v3
主要语言: EN
支持语言:
EN ZH
安全公告
暂无安全公告信息
变更历史
v3 CNNVD
2026-01-26 02:11:55
vulnerability_type: 未提取 → 其他; cnnvd_id: 未提取 → CNNVD-202601-3331; data_sources: ['cve', 'nvd'] → ['cnnvd', 'cve', 'nvd']
查看详细变更
  • vulnerability_type: 未提取 -> 其他
  • cnnvd_id: 未提取 -> CNNVD-202601-3331
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2026-01-22 06:00:14
data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • data_sources: ['cve'] -> ['cve', 'nvd']