Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-44945

Cross-Cluster Impersonation Confused-Deputy Privilege Escalation
Back to all
CVE

CVE-2026-44945

Cross-Cluster Impersonation Confused-Deputy Privilege Escalation

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.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44945.json, https://github.com/rancher/rancher/security/advisories/GHSA-v584-7w32-jwpq, https://nvd.nist.gov/vuln/detail/CVE-2026-44945, https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-44945, https://github.com/rancher/rancher/pull/55983, https://github.com/rancher/rancher

Severity

9.1

CVSS Score
0
10

Basic Information

Base CVSS
9.1
EPSS Probability
0.00377%
EPSS Percentile
0.30539%
Introduced Version
19d8a9c03fde57ab691101dc90a17b92c55f09ad
Fix Available
1bb24fe965ab9a801cd28447cc97df28db58cbd9

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading