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CVE-2026-75889— CVE-2026-75889 CVE Record

Quick assessment

Affected
Grafana Alloy
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.

Grafana Alloy 中的 组件允许能够在被监控命名空间中创建或修改 ServiceMonitor 资源的用户，通过 参数指定任意本地文件。Alloy 会读取该文件，并将其内容作为 Bearer Token 发送到由攻击者控制的抓取端点。这可能泄露 Alloy 进程可访问的文件，包括其投影的 Kubernetes 服务账户（service account）令牌，从而使攻击者获得与 Alloy 相同或更高的 Kubernetes 权限。利用此漏洞需要用户具备 ServiceMonitor 的写权限，且其权限低于

CVSS 7.7 · High
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I. Basic Information for CVE-2026-75889

Vulnerability Information
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Vulnerability Title
CVE-2026-75889 CVE Record
Source: CVE Program / CVE List V5
Vulnerability Description
Grafana Alloy’s prometheus.operator.servicemonitors component allows a user who can create or modify ServiceMonitor resources in a watched namespace to specify an arbitrary local file through bearerTokenFile. Alloy reads the file and sends its contents as a bearer token to an attacker-controlled scrape endpoint. This may disclose files accessible to the Alloy process, including its projected Kubernetes service account token, potentially granting the attacker Alloy’s Kubernetes permissions. Exploitation requires ServiceMonitor write access and lower privileges than Alloy’s service account.
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
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Grafana Alloy 1.0.0 ~ 1.18.1 -

II. Public POCs for CVE-2026-75889

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III. Intelligence Information for CVE-2026-75889

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Vendor Advisories for CVE-2026-75889 (1)

IV. Related Vulnerabilities

Same product: Alloy
Same vendor: Grafana

V. Comments for CVE-2026-75889

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