High [CVE-2026-18381] operator service-account token exfiltration via user-controlled Prometheus service_address
This high-severity Red Hat Linux advisory covers CVE-2026-18381 affecting Cost Management Metrics Operator.
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Summary
A flaw was found in the koku-metrics-operator for Red Hat OpenShift. The operator's CostManagementMetricsConfig custom resource allows a user able to edit the CR to specify an arbitrary upload URL.
The operator attaches its own Kubernetes service-account bearer token to queries sent to this user-controlled URL, allowing the attacker to obtain the token. Red Hat severity: Important — CVSS 7.6 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N).
Weakness: CWE-918. Affected Red Hat products: Cost Management Metrics Operator.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · medium-confidence parse· fetched 1 month ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 1 month ago·verify at source
Mitigation
The source record does not include mitigation steps. That does not mean no fix exists. Read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 1 month ago·verify at source
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