CVE-2026-88808Suse Rancher Fleet
NVDCVSS scored by meissner@suse.de
Vulnerability Summary
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.
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.
CVSS v3.1 Base Metrics — Score 8.8 (HIGH)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAttack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Affected & Patched Versions
- Suse Rancher Fleet >= 0.14.0 and < 0.14.11
- Suse Rancher Fleet >= 0.15.0 and < 0.15.7
- Suse Rancher Fleet >= 0.16.0 and < 0.16.2
- Suse Rancher Fleet 0.14.11
- Suse Rancher Fleet 0.15.7
- Suse Rancher Fleet 0.16.2
What to do
Plan remediation soon. No exploitation is confirmed yet, but the severity is high.
- Check whether you run Suse Rancher Fleet and which version.
- Update to a patched version listed above, then confirm the new version.
Timeline
- Sep 28, 2026Published
- Oct 7, 2026Record last modified
Score, severity and exploitation changes are tracked from the day Watchtower started logging them.
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External References
Data last checked: Nov 14, 2026 13:06 UTC