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CVE-2026-93538GHSA-H9P5-FP5H-QPQR

Cross-tenant BundleDeployment and Secret disclosure via spoofed cluster labels during agent-initiated registration in Fleet

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 0.16.1, 0.15.6, 0.14.10, 0.13.15, 0.12.19
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

A cross-tenant authorization issue was discovered in SUSE Rancher Fleet. During agent-initiated cluster registration, cluster labels supplied by the registering agent, including labels in the reserved management.cattle.io/ namespace such as the cluster display name label, were applied to the resulting upstream Cluster object. Because Fleet resolves GitRepo and Bundle targets from those cluster labels, a party able to register a cluster into a Fleet workspace namespace shared with other tenants could cause its own cluster to satisfy targeting rules that administrators intended for a different cluster. This affects SUSE Rancher Fleet 0.16 before 0.16.1, 0.15 before 0.15.6, 0.14 before 0.14.10, 0.13 before 0.13.15, 0.12 before 0.12.19 and older versions.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Fleet

    From 0.16.0 · fixed in 0.16.1; From 0.15.0 · fixed in 0.15.6; From 0.14.0 · fixed in 0.14.10; From 0.13.0 · fixed in 0.13.15; From 0.12.0 · fixed in 0.12.19

References 1

GitHub · rancher/fleet