Skip to content
Fencer Intel
critical 9.9

CVE-2026-41050 json

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

published 6mo ago modified 14d ago also GHSA-765j-qfrp-hm3j , GO-2026-5207 , EUVD-2026-29917

cvss
9.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

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`.

Patch / fix

  • go github.com/rancher/fleet 0.11.13, 0.12.14, 0.13.10, 0.14.5, 0.15.1
  • SUSE Rancher 0.11.13, 0.12.14, 0.13.10, 0.14.5, 0.15.1
  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

Is CVE-2026-41050 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
5mo ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/rancher/fleet
>=0.15.0, <0.15.1
>=0.14.0, <0.14.5
>=0.13.0, <0.13.10
>=0.12.0, <0.12.14
>=0.11.0, <0.11.13
0.15.1
0.14.5
0.13.10
0.12.14
0.11.13

Affected products

  • SUSE Rancher

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.