Vulnerability DatabaseCVE-2026-44945
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CVE-2026-44945
Published:August 05, 2026
Updated:September 01, 2026
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 Packages
https://github.com/rancher/rancher.git (GITHUB):
Affected version(s) >=v2.14.0 <v2.14.2
Fix Suggestion:
Update to version v2.14.2
https://github.com/rancher/rancher.git (GITHUB):
Affected version(s) >=v2.13.0 <v2.13.8
Fix Suggestion:
Update to version v2.13.8
https://github.com/rancher/rancher.git (GITHUB):
Affected version(s) >=v2.11.0 <v2.11.16
Fix Suggestion:
Update to version v2.11.16
https://github.com/rancher/rancher.git (GITHUB):
Affected version(s) >=v2.12.0 <v2.12.12
Fix Suggestion:
Update to version v2.12.12
github.com/rancher/rancher (GO):
Affected version(s) >=v0.0.0-20250731022323-8815e66bf2e4 <v0.0.0-20260730195259-3bc84195ee88
Fix Suggestion:
Update to version v0.0.0-20260730195259-3bc84195ee88
github.com/rancher/rancher (GO):
Affected version(s) >=v0.0.0-20250331174853-4b8ab8c48d68 <v0.0.0-20260730195307-e6c19548eded
Fix Suggestion:
Update to version v0.0.0-20260730195307-e6c19548eded
github.com/rancher/rancher (GO):
Affected version(s) >=v0.0.0-20260326190150-19d8a9c03fde <v0.0.0-20260527223347-1bb24fe965ab
Fix Suggestion:
Update to version v0.0.0-20260527223347-1bb24fe965ab
github.com/rancher/rancher (GO):
Affected version(s) >=v0.0.0-20251125015639-f94ac947f75e <v0.0.0-20260730195254-853a0e93a1ca
Fix Suggestion:
Update to version v0.0.0-20260730195254-853a0e93a1ca
Related Resources (6)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44945.json
https://github.com/rancher/rancher/pull/55983
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-44945
https://nvd.nist.gov/vuln/detail/CVE-2026-44945
https://github.com/rancher/rancher
https://github.com/rancher/rancher/security/advisories/GHSA-v584-7w32-jwpq
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CVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Exposure of Sensitive System Information to an Unauthorized Control Sphere
CWE-497
Unintended Proxy or Intermediary ('Confused Deputy')
CWE-441
EPSS
Base Score:
0.38