CVE-2026-93538High· 7.1▾ TwilightA 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.1 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 29.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
Last analysed / modified upstream
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.
rancher_fleet >= 0.12.0, < 0.12.19rancher_fleet >= 0.13.0, < 0.13.15rancher_fleet >= 0.14.0, < 0.14.10rancher_fleet >= 0.15.0, < 0.15.6rancher_fleet >= 0.16.0, < 0.16.1Upgrade past the affected range:
rancher_fleet 0.16.1Connected by shared product, vendor, weakness, or advisory.
CVE-2026-88808High· 8.8A 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
CVE-2026-93539Medium· 5.4A vulnerability was discovered in Fleet's Git webhook receiver (the gitjob webhook service)
CVE-2026-93540Medium· 6.5A privilege mismatch was found in Fleet
CVE-2026-93537Medium· 6.5A user who can supply bundle content to a repository referenced by a GitRepo resource, for example through Git push access, or through permission to create or modify a GitRepo, can cause SUSE Rancher Fleet to read files from the filesyst…
CVE-2026-75033High· 7.7A flaw was found in Rancher Manager
CVE-2026-71404High· 8.7A flaw was found in Rancher Manager