Lighthouse: dockerfile build stages use end-of-life fedora 40 referenced by mutable tag

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-66788
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-20 19:16:58 UTC
Updated2026-09-03 13:06:01 UTC
DescriptionA flaw was found in Lighthouse. A remote attacker, by compromising a spoke cluster, can exploit a vulnerability where the destination namespace for resource injection is derived from an attacker-controlled label or annotation on the broker object. This allows the attacker to inject unauthorized EndpointSlices and ServiceImports into any namespace on peer clusters, including critical system namespaces like kube-system and openshift-*. This could lead to privilege escalation or other forms of system compromise within the cluster.

Risk And Classification

Primary CVSS: v3.1 3.7 LOW from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.002810000 probability, percentile 0.203470000 (date 2026-09-07)

Problem Types: CWE-1104 | CWE-1104 Use of Unmaintained Third Party Components

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNACVSS3.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Advanced Cluster Management For Kubernetes 2.17 unaffected 1788023916 * rpm Not specified
CNA Red Hat Red Hat Advanced Cluster Management For Kubernetes 2.17 unaffected 1788023940 * rpm Not specified
CNA Red Hat Red Hat Advanced Cluster Management For Kubernetes 2.17 unaffected 1788105072 * rpm Not specified
CNA Red Hat Red Hat Advanced Cluster Management For Kubernetes 2.17 unaffected 1788073481 * rpm Not specified

References

ReferenceSourceLinkTags
access.redhat.com/errata/RHSA-2026:63016 [email protected] access.redhat.com
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com
access.redhat.com/security/cve/CVE-2026-66788 [email protected] access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2026-07-27T00:00:00.000ZReported to Red Hat.
CNA2026-08-20T17:20:00.000ZMade public.

Workarounds

CNA: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

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