CVE-2026-26069
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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Description
Scraparr is a Prometheus Exporter for various components of the *arr Suite. From 3.0.0-beta to before 3.0.2, when the Readarr integration was enabled, the exporter exposed the configured Readarr API key as the alias metric label value. Users were affected only if all of the following conditions are met, Readarr scraping feature was enabled and no alias configured, the exporter’s /metrics endpoint was accessible to external or unauthorized users, and the Readarr instance is externally accessible. If the /metrics endpoint was publicly accessible, the Readarr API key could have been disclosed via exported metrics data. This vulnerability is fixed in 3.0.2.
Analysis
Scraparr versions 3.0.0-beta through 3.0.1 expose Readarr API keys in plaintext through the /metrics endpoint when the Readarr integration is enabled without a custom alias configured. An attacker with access to the publicly exposed /metrics endpoint can harvest valid API credentials to compromise an externally accessible Readarr instance. …
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Remediation
Within 24 hours: Identify all Scraparr instances running versions 3.0.0-beta to 3.0.1 with Readarr integration enabled and immediately rotate all exposed Readarr API keys. Within 7 days: Apply vendor patch to upgrade all affected Scraparr instances to version 3.0.2 or later. …
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