{"api_version":"1","generated_at":"2026-10-01T06:31:28+00:00","cve":"CVE-2026-93538","urls":{"html":"https://cve.report/CVE-2026-93538","api":"https://cve.report/api/cve/CVE-2026-93538.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93538","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93538"},"summary":{"title":"Cross-tenant BundleDeployment and Secret disclosure via spoofed cluster labels during agent-initiated registration in Fleet","description":"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.","state":"PUBLISHED","assigner":"suse","published_at":"2026-09-28 15:17:24","updated_at":"2026-09-29 21:32:59"},"problem_types":["CWE-290","CWE-639","CWE-290 CWE-290 Authentication bypass by spoofing","CWE-639 CWE-639 Authorization bypass through User-Controlled key"],"metrics":[{"version":"3.1","source":"meissner@suse.de","type":"Secondary","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","version":"3.1"}}],"references":[{"url":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","name":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","refsource":"meissner@suse.de","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93538","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93538","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"SUSE","product":"Rancher","version":"affected 0.16.0 0.16.1 semver","platforms":[]},{"source":"CNA","vendor":"SUSE","product":"Rancher","version":"affected 0.15.0 0.15.6 semver","platforms":[]},{"source":"CNA","vendor":"SUSE","product":"Rancher","version":"affected 0.14.0 0.14.10 semver","platforms":[]},{"source":"CNA","vendor":"SUSE","product":"Rancher","version":"affected 0.13.0 0.13.15 semver","platforms":[]},{"source":"CNA","vendor":"SUSE","product":"Rancher","version":"affected 0.12.0 0.12.19 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"https://github.com/Pig-Tail","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"93538","cve":"CVE-2026-93538","epss":"0.001710000","percentile":"0.057940000","score_date":"2026-09-29","updated_at":"2026-09-30 00:11:20"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-93538","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-09-28T15:46:41.479078Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-09-28T16:22:26.562Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","packageName":"Fleet","product":"Rancher","repo":"https://github.com/rancher/fleet/","vendor":"SUSE","versions":[{"lessThan":"0.16.1","status":"affected","version":"0.16.0","versionType":"semver"},{"lessThan":"0.15.6","status":"affected","version":"0.15.0","versionType":"semver"},{"lessThan":"0.14.10","status":"affected","version":"0.14.0","versionType":"semver"},{"lessThan":"0.13.15","status":"affected","version":"0.13.0","versionType":"semver"},{"lessThan":"0.12.19","status":"affected","version":"0.12.0","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*","versionEndExcluding":"0.16.1","versionStartIncluding":"0.16.0","vulnerable":true},{"criteria":"cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*","versionEndExcluding":"0.15.6","versionStartIncluding":"0.15.0","vulnerable":true},{"criteria":"cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*","versionEndExcluding":"0.14.10","versionStartIncluding":"0.14.0","vulnerable":true},{"criteria":"cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*","versionEndExcluding":"0.13.15","versionStartIncluding":"0.13.0","vulnerable":true},{"criteria":"cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*","versionEndExcluding":"0.12.19","versionStartIncluding":"0.12.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"credits":[{"lang":"en","type":"finder","value":"https://github.com/Pig-Tail"}],"datePublic":"2026-09-28T14:05:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","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."}],"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."}],"impacts":[{"capecId":"CAPEC-122","descriptions":[{"lang":"en","value":"CAPEC-122 Privilege Abuse"}]},{"capecId":"CAPEC-195","descriptions":[{"lang":"en","value":"CAPEC-195 Principal Spoof"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-290","description":"CWE-290 Authentication bypass by spoofing","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-639","description":"CWE-639 Authorization bypass through User-Controlled key","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-28T14:10:21.720Z","orgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","shortName":"suse"},"references":[{"tags":["vendor-advisory"],"url":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr"}],"source":{"discovery":"EXTERNAL"},"title":"Cross-tenant BundleDeployment and Secret disclosure via spoofed cluster labels during agent-initiated registration in Fleet","x_generator":{"engine":"Vulnogram 1.0.5"}}},"cveMetadata":{"assignerOrgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","assignerShortName":"suse","cveId":"CVE-2026-93538","datePublished":"2026-09-28T14:10:21.720Z","dateReserved":"2026-09-18T09:08:10.294Z","dateUpdated":"2026-09-28T16:22:26.562Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-28 15:17:24","lastModifiedDate":"2026-09-29 21:32:59","problem_types":["CWE-290","CWE-639","CWE-290 CWE-290 Authentication bypass by spoofing","CWE-639 CWE-639 Authorization bypass through User-Controlled key"],"metrics":{"cvssMetricV31":[{"source":"meissner@suse.de","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":4.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-09-28T15:46:41.479078Z","id":"CVE-2026-93538","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93538","Ordinal":"1","Title":"Cross-tenant BundleDeployment and Secret disclosure via spoofed ","CVE":"CVE-2026-93538","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93538","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Cross-tenant BundleDeployment and Secret disclosure via spoofed "}]}}}