{"schemaVersion":3,"id":"CVE-2026-93538","aliases":[],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2026-09-28T14:10:21.720Z","modified":"2026-09-28T16:22:26.562Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.1,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","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","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00171,"percentile":0.06108,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-09-29T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00171,"percentile":0.06108}],"last30":[{"date":"2026-09-29T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00171,"percentile":0.06108}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-290","name":"Authentication Bypass by Spoofing","description":"This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/290.html"},{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key","description":"The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/639.html"}],"affected":[{"vendor":"suse","product":"rancher","name":"rancher","label":"rancher","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 0.16.0, < 0.16.1","noFixRecorded":false,"fixedIn":null},{"text":"≥ 0.15.0, < 0.15.6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 0.14.0, < 0.14.10","noFixRecorded":false,"fixedIn":null},{"text":"≥ 0.13.0, < 0.13.15","noFixRecorded":false,"fixedIn":null},{"text":"≥ 0.12.0, < 0.12.19","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 0.16.0, < 0.16.1 | ≥ 0.15.0, < 0.15.6 | ≥ 0.14.0, < 0.14.10 | ≥ 0.13.0, < 0.13.15 | ≥ 0.12.0, < 0.12.19","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"rancher","label":"Rancher","category":"server-app"}},"hubHref":"/vendor/suse/rancher"},{"vendor":"suse","product":"rancher_fleet","name":"rancher fleet","label":"rancher_fleet","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 0.12.0, < 0.12.19","noFixRecorded":false,"fixedIn":null},{"text":"≥ 0.13.0, < 0.13.15","noFixRecorded":false,"fixedIn":null},{"text":"≥ 0.14.0, < 0.14.10","noFixRecorded":false,"fixedIn":null},{"text":"≥ 0.15.0, < 0.15.6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 0.16.0, < 0.16.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 0.12.0, < 0.12.19 | ≥ 0.13.0, < 0.13.15 | ≥ 0.14.0, < 0.14.10 | ≥ 0.15.0, < 0.15.6 | ≥ 0.16.0, < 0.16.1","eol":null,"hubHref":"/vendor/suse/rancher_fleet"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","label":"github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr","hostname":"github.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-28T14:10:21.720Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-28T16:22:26.562Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":28,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T23:48:57.373Z","stale":false,"partial":false}}