{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93538","assignerOrgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","state":"PUBLISHED","assignerShortName":"suse","dateReserved":"2026-09-18T09:08:10.294Z","datePublished":"2026-09-28T14:10:21.720Z","dateUpdated":"2026-09-28T16:22:26.562Z"},"containers":{"cna":{"providerMetadata":{"orgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","shortName":"suse","dateUpdated":"2026-09-28T14:10:21.720Z"},"title":"Cross-tenant BundleDeployment and Secret disclosure via spoofed cluster labels during agent-initiated registration in Fleet","datePublic":"2026-09-28T14:05:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-290","description":"CWE-290 Authentication bypass by spoofing","type":"CWE"}]},{"descriptions":[{"lang":"en","cweId":"CWE-639","description":"CWE-639 Authorization bypass through User-Controlled key","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-122","descriptions":[{"lang":"en","value":"CAPEC-122 Privilege Abuse"}]},{"capecId":"CAPEC-195","descriptions":[{"lang":"en","value":"CAPEC-195 Principal Spoof"}]}],"affected":[{"vendor":"SUSE","product":"Rancher","packageName":"Fleet","repo":"https://github.com/rancher/fleet/","versions":[{"status":"affected","version":"0.16.0","lessThan":"0.16.1","versionType":"semver"},{"status":"affected","version":"0.15.0","lessThan":"0.15.6","versionType":"semver"},{"status":"affected","version":"0.14.0","lessThan":"0.14.10","versionType":"semver"},{"status":"affected","version":"0.13.0","lessThan":"0.13.15","versionType":"semver"},{"status":"affected","version":"0.12.0","lessThan":"0.12.19","versionType":"semver"}],"defaultStatus":"unaffected"}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*","versionStartIncluding":"0.16.0","versionEndExcluding":"0.16.1"},{"vulnerable":true,"criteria":"cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*","versionStartIncluding":"0.15.0","versionEndExcluding":"0.15.6"},{"vulnerable":true,"criteria":"cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*","versionStartIncluding":"0.14.0","versionEndExcluding":"0.14.10"},{"vulnerable":true,"criteria":"cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*","versionStartIncluding":"0.13.0","versionEndExcluding":"0.13.15"},{"vulnerable":true,"criteria":"cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*","versionStartIncluding":"0.12.0","versionEndExcluding":"0.12.19"}]}]}],"descriptions":[{"lang":"en","value":"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.\nThis 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.","supportingMedia":[{"type":"text/html","base64":false,"value":"A cross-tenant authorization issue was discovered in SUSE Rancher Fleet. During agent-initiated&nbsp;cluster registration, cluster labels supplied by the registering agent, including labels in the reserved <code>management.cattle.io/</code> namespace such as the cluster display name label, were applied to the resulting upstream <code>Cluster</code> object. Because Fleet resolves <code>GitRepo</code> and <code>Bundle</code> 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.<br>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."}]}],"references":[{"url":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE","baseSeverity":"HIGH","baseScore":7.1,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N"}}],"credits":[{"lang":"en","value":"https://github.com/Pig-Tail","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-93538","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-28T15:46:41.479078Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-28T16:22:26.562Z"}}]}}