{"schema":"threatline.record/2","record":{"id":"CVE-2026-93538","aliases":["GHSA-h9p5-fp5h-qpqr"],"summary":"Cross-tenant BundleDeployment and Secret disclosure via spoofed cluster labels during agent-initiated registration in Fleet","details":"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.","categories":["Applications & CMS"],"product":"Rancher","vendor":"SUSE","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93538","source_modified_at":"2026-09-28T16:22:26.562Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Rancher","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"}],"defaultStatus":"unaffected"},{"source":"GitHub Advisory Database","source_url":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","source_modified_at":"2026-09-23T22:30:17Z","fetched_at":"2026-10-23T21:14:28.314422Z","package":{"ecosystem":"go","name":"github.com/rancher/fleet"},"range":">=v0.16.0, <v0.16.1"},{"source":"GitHub Advisory Database","source_url":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","source_modified_at":"2026-09-23T22:30:17Z","fetched_at":"2026-10-23T21:14:28.314422Z","package":{"ecosystem":"go","name":"github.com/rancher/fleet"},"range":">=v0.15.0, <v0.15.6"},{"source":"GitHub Advisory Database","source_url":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","source_modified_at":"2026-09-23T22:30:17Z","fetched_at":"2026-10-23T21:14:28.314422Z","package":{"ecosystem":"go","name":"github.com/rancher/fleet"},"range":">=v0.14.0, <v0.14.10"},{"source":"GitHub Advisory Database","source_url":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","source_modified_at":"2026-09-23T22:30:17Z","fetched_at":"2026-10-23T21:14:28.314422Z","package":{"ecosystem":"go","name":"github.com/rancher/fleet"},"range":">=v0.13.0, <v0.13.15"},{"source":"GitHub Advisory Database","source_url":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","source_modified_at":"2026-09-23T22:30:17Z","fetched_at":"2026-10-23T21:14:28.314422Z","package":{"ecosystem":"go","name":"github.com/rancher/fleet"},"range":">=v0.12.0, <v0.12.19"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93538","source_modified_at":"2026-09-28T16:22:26.562Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Rancher","ecosystem":null},"version":"0.16.1","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93538","source_modified_at":"2026-09-28T16:22:26.562Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Rancher","ecosystem":null},"version":"0.15.6","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93538","source_modified_at":"2026-09-28T16:22:26.562Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Rancher","ecosystem":null},"version":"0.14.10","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93538","source_modified_at":"2026-09-28T16:22:26.562Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Rancher","ecosystem":null},"version":"0.13.15","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93538","source_modified_at":"2026-09-28T16:22:26.562Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Rancher","ecosystem":null},"version":"0.12.19","basis":"first unaffected version stated in the CVE record"}],"cvss":7.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00171,"percentile":0.06166,"score_date":"2026-10-23"},"published_at":"2026-09-28T14:10:21.720Z","modified_at":"2026-09-28T16:22:26.562Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-93538","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-28T16:22:26.562Z"},{"source":"GitHub Advisory Database","url":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","fetched_at":"2026-10-23T21:14:28.314422Z","source_modified_at":"2026-09-23T22:30:17Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-93538","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","GitHub Advisory Database","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","tags":["vendor-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-09-28T15:46:41.479078Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-09-28T16:22:26.562Z","content_hash":"5152f6b80393ba51fb510d937951e6273822789c5ec1e4d29228e59b6ec998ee"}}