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Vulnerability record · CVE-2026-44945 · published 5 August 2026

CVE-2026-44945: A privilege escalation vulnerability exists in Rancher's impersonation middleware (pkg/auth/requests/impersona…

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.

9.1 CVSS 3.1 Critical EPSS 0.56% · top 55.6% CWE-441 · CWE-441CWE-497 · CWE-497 Awaiting Analysis
9.1CVSS 3.1 base score
0.56%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
1 Sep 2026Last modified by NVD

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.

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

References

LinkTags
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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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-83548SonicWall SMA1000 pre-auth SSRF via alternate access pathThe SMA1000 Appliance Work Place interface exposes an unintended alternate access path that allows server-side request forgery before authentication.…KEVEPSS 8.8%analysed

Source: NIST National Vulnerability Database (record CVE-2026-44945), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.