CVE-2026-41050

CRITICAL

Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering

Title source: cna

Description

Fleet's Helm deployer did not fully apply ServiceAccount impersonation in two code paths, allowing a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on every downstream cluster targeted by their `GitRepo`.

References (2)

Core 2

Core References

https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41050

https://github.com/advisories/GHSA-765j-qfrp-hm3j

Scores

CVSS v3 9.9

EPSS 0.0002

EPSS Percentile 4.0%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-863

Status published

Products (10)

rancher/fleet 0.11.0 - 0.11.13Go

rancher/fleet 0.12.0 - 0.12.14Go

rancher/fleet 0.13.0 - 0.13.10Go

rancher/fleet 0.14.0 - 0.14.5Go

rancher/fleet 0.15.0 - 0.15.1Go

SUSE/Rancher 0.11.0 - 0.11.13

SUSE/Rancher 0.12.0 - 0.12.14

SUSE/Rancher 0.13.0 - 0.13.10

SUSE/Rancher 0.14.0 - 0.14.5

SUSE/Rancher 0.15.0 - 0.15.1

Published May 13, 2026

Tracked Since May 13, 2026