8.8

CVE-2026-88808

Fleet agent copies downstream resources with cluster-admin privileges, allowing cross-namespace writes on downstream clusters

A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same downstream clusters, for example different privileged or untrusted teams inside the same organization. This could lead to overwritten configuration files.

This issue affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, and 0.14 before 0.14.11.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Suse ≫ Rancher Fleet Version >= 0.14.0 < 0.14.11
Suse ≫ Rancher Fleet Version >= 0.15.0 < 0.15.7
Suse ≫ Rancher Fleet Version >= 0.16.0 < 0.16.2
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.176
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
SUSE 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-250 Execution with Unnecessary Privileges

The product performs an operation at a privilege level that is higher than the minimum level required, which creates new weaknesses or amplifies the consequences of other weaknesses.

https://github.com/rancher/fleet/security/advisories/GHSA-q9v4-358v-r8q5
Vendor Advisory