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CVE-2026-75889 is an arbitrary local-file disclosure vulnerability in Grafana Alloy versions 1.0.0 through 1.18.1, affecting the prometheus.operator.servicemonitors component. A principal permitted to create or modify ServiceMonitor resources in an Alloy-watched namespace can set bearerTokenFile to a local path accessible to the Alloy process. Alloy reads the referenced file and supplies its contents as a bearer token when scraping an attacker-controlled endpoint, enabling file-content exfiltration.
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No public exploit code observed for this vulnerability.
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2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An arbitrary local-file disclosure vulnerability in Grafana Alloy's prometheus.operator.servicemonitors component. An attacker with ServiceMonitor write access in a watched namespace can use bearerTokenFile to cause Alloy to transmit files readable by its process to an attacker-controlled endpoint, potentially exposing Alloy's projected Kubernetes service-account token and enabling use of Alloy's Kubernetes permissions.
A high-severity arbitrary local file disclosure issue in Grafana Alloy's prometheus.operator.servicemonitors component. A user with ServiceMonitor write access in a watched namespace can abuse bearerTokenFile to cause Alloy to transmit files readable by its process to an attacker-controlled scrape endpoint, potentially exposing Alloy's projected Kubernetes service-account token and its associated Kubernetes permissions.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.