> CVE-2026-73266 [HIGH]

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PUBLISHED
2026-08-13 17:17
MODIFIED
2026-08-13 17:17
CVSS_SCORE V3
7.1
EPSS (Prob. Exploit)
0.35%
Top 71.2%
DATA SOURCES:
NVD 🔗 2026-08-13 RED HAT 🔗 2026-08-16 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-01

> DESCRIPTION

A flaw was found in the clusterclaims-controller component of Multicluster Engine (MCE). An authenticated tenant can exploit this vulnerability by manipulating ClusterClaim labels. This allows the tenant to force a cluster to join a ManagedClusterSet belonging to another tenant. Such unauthorized access could enable the injection of policies and workloads into other tenants' clusters.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
EXPLOITABILITY
1.8
IMPACT
4.7

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-441

> CWE DETAILED DESCRIPTIONS

CWE-441: Unintended Proxy or Intermediary - The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: multicluster engine for Kubernetes v2.17.2 security update
Red Hat multicluster engine for Kubernetes v2.17 general availability release images, which provide security fixes, bug fixes, and updated container images. Red Hat Product Security has rated this up...
Red Hat Security Advisory: multicluster engine for Kubernetes v2.6.14 security update
Red Hat multicluster engine for Kubernetes v2.6 general availability release images, which provide security fixes, bug fixes, and updated container images. Red Hat Product Security has rated this upd...
Red Hat Security Advisory: multicluster engine for Kubernetes v2.9.7 security update
Red Hat multicluster engine for Kubernetes v2.9 general availability release images, which provide security fixes, bug fixes, and updated container images. Red Hat Product Security has rated this upd...
Red Hat Security Advisory: multicluster engine for Kubernetes v2.8.10 security update
Red Hat multicluster engine for Kubernetes v2.8 general availability release images, which provide security fixes, bug fixes, and updated container images. Red Hat Product Security has rated this upd...
Red Hat Security Advisory: multicluster engine for Kubernetes v2.10.6 security update
Red Hat multicluster engine for Kubernetes v2.10 general availability release images, which provide security fixes, bug fixes, and updated container images. Red Hat Product Security has rated this up...
Red Hat Security Advisory: multicluster engine for Kubernetes v2.11.6 security update
Red Hat multicluster engine for Kubernetes v2.11 general availability release images, which provide security fixes, bug fixes, and updated container images. Red Hat Product Security has rated this up...

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Important

> HISTORIQUE DES MODIFICATIONS

Première apparition
13/08/2026 17:17
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-441: Unintended Proxy or Intermediary ('Confused Deputy') - The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the ori...
Nouvelle valeur:
CWE-441: Unintended Proxy or Intermediary - The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the ...
📊 ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-441: Unintended Proxy or Intermediary ('Confused Deputy') - The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the ori...
📊 ENRICHISSEMENT 16/08/2026 05:01
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 16/08/2026 05:01
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 4 Dernière mise à jour: 3 hours ago

> REFERENCES

https://access.redhat.com/security/cve/CVE-2026-73266
https://bugzilla.redhat.com/show_bug.cgi?id=2514217
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