CVE-2026-88808
Fleet agent copies downstream resources with cluster-admin privileges, allowing cross-namespace writes on downstream clusters
- State
- Published
- Severity
- 8.8 High
- Published
- Sep 28, 2026
- Updated
- Sep 29, 2026
- Reserved
- Sep 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | suse |
Weaknesses
- CWE-250 Execution with unnecessary privileges
Affected Products
| Product | Versions |
|---|---|
RancherSUSE |
|
References
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.