Vulnerability · Published Jul 30, 2026 · Assigned by redhat

CVE-2026-18381Project-koku/koku-metrics-operator: koku-metrics-operator: operator service-account token exfiltration via user-controlled prometheus service_address

High 7.6

In plain English

A high-severity server-side request forgery in Cost Management 4 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).

Severity (CVSS 3.1)7.6High

Exploit odds (30 days)0.4%top 68.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Red Hat	Cost Management 4	see references

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N

References

RHSA-2026:81201 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-18381 vdb-entry, x_refsource_REDHAT
RHBZ#2509251 issue-tracking, x_refsource_REDHAT