> CVE-2026-44945 [CRITICAL]

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PUBLISHED
2026-08-05 10:17
MODIFIED
2026-08-05 10:17
CVSS_SCORE V3
9.1
EPSS (Prob. Exploit)
0.56%
Top 54.1%
DATA SOURCES:
NVD 🔗 2026-08-05 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 OSV 🔗 2026-09-14

> DESCRIPTION

A privilege escalation vulnerability exists in Rancher's impersonation middleware (pkg/auth/requests/impersonate.go). An authenticated Rancher user with the default user global role can gain full administrative access to the Rancher control plane and transitively to all downstream clusters it manages. This issue affects Rancher: from 2.11.0 before 2.11.16, from 2.12.0 before 2.12.12, from 2.13.0 before 2.13.8, and from 2.14.0 before 2.14.2.

> 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:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EXPLOITABILITY
2.3
IMPACT
6.0

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
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
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
High (H)
Authentifié avec privilèges administratifs
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
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-441 CWE-497

> 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. | CWE-497: Exposure of Sensitive System Information to an Unauthorized Control Sphere - The product does not properly prevent sensitive system-level information from being accessed by unauthorized actors who do not have the same level of access to the underlying system as the product does.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Cross-Cluster Impersonation Confused-Deputy Privilege Escalation

AFFECTED PACKAGES:
Unknown / Unknown
267 versions affected
ALIASES:
GHSA-v584-7w32-jwpq

> HISTORIQUE DES MODIFICATIONS

Première apparition
05/08/2026 10:17
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...
Total des modifications: 2 Dernière mise à jour: 3 days ago

> REFERENCES

https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-44945
https://github.com/rancher/rancher/pull/55983
https://github.com/rancher/rancher/security/advisories/GHSA-v584-7w32-jwpq
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