Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-18378

CVE-2026-18378MEDIUM

Red Hat Cost Management 4 — Project-koku/koku-metrics-operator: koku-metrics-operator: cluster pull-secret token exfiltration via user-controlled api_url (ssrf / confused deputy)

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   H   N  C  H  N  N    6.8   .0046   38.9     —

AFFECTED
  Product            Versions     Fixed
  Cost Management 4  unspecified  1790844333

TIMELINE
  Jul 30  Reserved by redhat
  Jul 30  Published (CNA: redhat)
  Oct 12  PATCH SHIPPED — CVE-2026-18378 (Red Hat Cost Management 4). Fixed in Cost Management 4 1790844333.

CWE-918 · CNA: redhat · CVSS v3.1 · 3 references · NVD status: Modified

Description

A flaw was found in koku-metrics-operator. The operator's CostManagementMetricsConfig custom resource allows user able to edit the CR to specify an arbitrary upload URL. When authentication.type is set to token (the default), the cluster-global Red Hat Cloud pull-secret bearer token is attached to HTTP requests sent to this user-controlled URL, allowing the attacker to obtain the token.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 30, 2026	Reserved	Reserved by redhat
July 30, 2026	Published	Published (CNA: redhat)
October 12, 2026	PATCH SHIPPED	PATCH SHIPPED — CVE-2026-18378 (Red Hat Cost Management 4). Fixed in Cost Management 4 1790844333.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Red Hat	Cost Management 4	—	—	1790844333

Weaknesses

CWE-918

References (3)

https://access.redhat.com/errata/RHSA-2026:81201
https://access.redhat.com/security/cve/CVE-2026-18378 [Vendor Advisory]
https://bugzilla.redhat.com/show_bug.cgi?id=2509249 [Issue Tracking, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-18378 at cve.org

Vendors: red hat

Weaknesses: CWE-918

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-18378 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.