CVE-2026-88808

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.

Affected Software

VendorProductVersion RangeStatus
SUSERancher0.16.0 < 0.16.2affected
SUSERancher0.15.0 < 0.15.7affected
SUSERancher0.14.0 < 0.14.11affected

Weaknesses

  • CWE-250: CWE-250 Execution with unnecessary privileges

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References