CVE-2026-18378: A flaw was found in koku-metrics-operator

This month

HIGH 7.6WATCHLISTMITIGATE

CVE-2026-18378 is a high-severity flaw (CVSS 7.6) affecting cost management metrics operator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-07-30
Last modified	2026-10-23

Publisher (CNA): Red Hat, Inc. · Vendor: redhat

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-30 12:17 UTCPublished CVE record published
2026-10-23 22:10 UTCUpdated Record last modified

redhat cost management metrics operator MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cost-management-metrics-operator || rpm -q cost-management-metrics-operator || cost-management-metrics-operator --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · kwin-zones · FIXED · 1.0.13-1.fc46 · FEDORA-2026-95888f332b · source

sudo dnf upgrade --advisory=FEDORA-2026-95888f332b

Fedora ELN · nginx-mod-brotli · FIXED · 1.0.0~rc-16.eln159 · FEDORA-2026-501a6a8273 · source

sudo dnf upgrade --advisory=FEDORA-2026-501a6a8273

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-18378?

cost management metrics operator: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-18378 being exploited?

CVE-2026-18378 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-18378 affect?

CVE-2026-18378 affects cost management metrics operator. Severity is high (CVSS 7.6). 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-gl

How urgent is CVE-2026-18378?

Priority 41/100. High severity; On your watchlist

Related CVEs

CVE-2026-18382 MEDIUM 6.8 MITIGATE A flaw was found in koku-metrics-operator
CVE-2026-18381 HIGH 7.6 MITIGATE A flaw was found in the koku-metrics-operator for Red Hat OpenShift

References

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