Critical severity · published May 13, 2026
CVE-2026-41050
Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering
9.9
CVSS
0.4%
EPSS
No
On KEV
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`.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
Rancher · SUSE
0.15.0 before 0.15.1; 0.14.0 before 0.14.5; 0.13.0 before 0.13.10; 0.12.0 before 0.12.14; 0.11.0 before 0.11.13 · source: vendor
RF
Rancher Fleet · Suse
0.11.0 before 0.11.13; 0.12.0 before 0.12.14; 0.13.0 before 0.13.10; 0.14.0 before 0.14.5; 0.15.0 before 0.15.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41050
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-41050
Permissions Required
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41050
Vendor Advisory
https://github.com/advisories/GHSA-765j-qfrp-hm3j
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