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CVE-2026-47701— OpenTelemetry Operator: ServiceMonitor bearerTokenFile reads arbitrary local file and sends contents as bearer auth

Quick assessment

Affected
open-telemetry opentelemetry-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.

OpenTelemetry Operator 是 OpenTelemetry Collector 的 Kubernetes 操作器。在 0.152.0 版本之前，当 中的 实例将 设置为 时，所选 端点的 值会被保留为 。能够创建或更新匹配 和 的 的租户，可以将 指向 Collector Pod 中的文件（包括 ），并将抓取（scraping）引导至由租户控制的端点。Collector 会在每次抓取间隔读取该文件，并将其内容作为 bearer 授权头发送。利用此漏洞需要 Collector 的服务账户令牌或其他敏

CVSS 7.7 · High EPSS 0.02% · P4

Possible ATT&CK Techniques 1 AI

T1006 · Direct Volume Access
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I. Basic Information for CVE-2026-47701

Vulnerability Information
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Vulnerability Title
OpenTelemetry Operator: ServiceMonitor bearerTokenFile reads arbitrary local file and sends contents as bearer auth
Source: CVE Program / CVE List V5
Vulnerability Description
The OpenTelemetry Operator is a Kubernetes Operator for the OpenTelemetry Collector. Prior to 0.152.0, cmd/otel-allocator TargetAllocator instances with targetAllocator.prometheusCR.enabled set to true preserve a selected ServiceMonitor endpoint's bearerTokenFile value as HTTPClientConfig.Authorization.CredentialsFile. A tenant who can create or update a ServiceMonitor matched by serviceMonitorSelector and serviceMonitorNamespaceSelector can point bearerTokenFile at a file in the Collector pod, including /var/run/secrets/kubernetes.io/serviceaccount/token, and direct scraping to a tenant-controlled endpoint. The Collector reads that file at scrape time and sends its contents as bearer authorization on every scrape interval. Exploitation also requires the Collector service-account token or another sensitive file to be mounted and the Collector to reach the chosen target. The DenyFSAccessThroughSMs control was absent, allowing disclosure of the Collector's service-account JWT or other mounted files, and resulting Kubernetes API impact is limited by the Collector service account's permissions. This issue is fixed in version 0.152.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
open-telemetry opentelemetry-operator < 0.152.0 -

II. Public POCs for CVE-2026-47701

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III. Intelligence Information for CVE-2026-47701

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Patches & Fixes for CVE-2026-47701 (1)

Vendor Advisories for CVE-2026-47701 (1)

Vendor Pages for CVE-2026-47701 (1)

IV. Related Vulnerabilities

Same vendor: open-telemetry
Same weakness: CWE-200

V. Comments for CVE-2026-47701

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