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CVE-2026-54495— Cross-namespace FeatureFlagSource and InProcessConfiguration resolution exposes spec contents on multi-tenant clusters

Quick assessment

Affected
open-feature open-feature-operator
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenFeature Operator 允许用户将特性开关（feature flags）暴露给应用程序。在 0.9.2 及更早版本中，能够创建由控制器管理的（controller-owned）工作负载的租户，可以使用 注解，并采用 语法来引用其他命名空间中的 或 。在将命名空间作为信任边界的多租户集群中，集群范围的 Operator 会读取该资源，并将其中的 字面量值、 、同步 URI 以及关联的 ConfigMap 物化（materialize）到租户的工作负载中。单租户集群不受此问题影响，且 和 的值保持命名

CVSS 4.3 · Medium EPSS 0.23% · P14

Affected Version Matrix 1

VendorProduct Version RangeStatus
open-feature open-feature-operator <= 0.9.2 affected
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I. Basic Information for CVE-2026-54495

Vulnerability Information
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Vulnerability Title
Cross-namespace FeatureFlagSource and InProcessConfiguration resolution exposes spec contents on multi-tenant clusters
Source: CVE Program / CVE List V5
Vulnerability Description
The OpenFeature Operator allows users to expose feature flags to applications. In version 0.9.2 and earlier, a tenant who can create a controller-owned workload can use the openfeature.dev/featureflagsource annotation with NAMESPACE/NAME syntax to reference a FeatureFlagSource or InProcessConfiguration in another namespace. On multi-tenant clusters that use namespaces as trust boundaries, the cluster-scoped operator reads that resource and materializes spec.envVars literal values, spec.httpSyncBearerToken, sync URIs, and supporting ConfigMaps into the tenant's workload. Single-tenant clusters are not impacted, secretKeyRef and configMapKeyRef values remain namespace-local, and creating a FeatureFlagSource is not required.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
将资源暴露给错误范围
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
open-feature open-feature-operator <= 0.9.2 -

II. Public POCs for CVE-2026-54495

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III. Intelligence Information for CVE-2026-54495

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Vendor Advisories for CVE-2026-54495 (1)

Other References for CVE-2026-54495 (1)

IV. Related Vulnerabilities

Same product: open-feature-operator
Same vendor: open-feature
Same weakness: CWE-668

V. Comments for CVE-2026-54495

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