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.
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References
History
Thu, 27 Aug 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | CVE-2026-75889 CVE Record | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GRAFANA
Published:
Updated: 2026-08-27T17:22:38.284Z
Reserved: 2026-08-18T13:48:17.836Z
Link: CVE-2026-75889
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Status : Received
Published: 2026-08-27T20:18:37.980
Modified: 2026-08-27T20:18:37.980
Link: CVE-2026-75889
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OpenCVE Enrichment
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Weaknesses
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