SSRF in Red Hat Cost Management Metrics Operator
CVE-2026-18381
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-18381 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Mitigation, Issue Tracking, Vendor Advisory)
- access.redhat.com/errata/RHSA-2026:81201 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-18381?
- CVE-2026-18381 is a high-severity vulnerability in Red Hat Cost Management Metrics Operator, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.6/10. Published 2026-07-30.
- How severe is CVE-2026-18381?
- High severity. CVSS v3 base score is 7.6 out of 10.